From a6b42f243f51637a765e7d518231b308fa1b9c84 Mon Sep 17 00:00:00 2001 From: Clemens Schwaighofer Date: Tue, 26 Oct 2021 16:35:26 +0900 Subject: [PATCH] Update CoreLibs with phpstan level 8, add qqFileUploader implementation base, add base Test class for testing --- 4dev/static_checker/phan.sh | 1 + 4dev/static_checker/phpstan.sh | 1 + phpstan-bootstrap.php | 4 +- phpstan.neon | 28 +- www/admin/class_test.db.php | 8 +- www/configs/config.php | 2 +- www/includes/admin_header.php | 4 +- www/includes/edit_base.php | 2 +- www/lib/CoreLibs/ACL/Login.php | 86 ++++- www/lib/CoreLibs/Admin/Backend.php | 88 +++-- www/lib/CoreLibs/Basic.php | 96 ++--- www/lib/CoreLibs/Check/Email.php | 13 +- www/lib/CoreLibs/Check/File.php | 5 +- www/lib/CoreLibs/Check/Jason.php | 3 +- www/lib/CoreLibs/Check/PhpVersion.php | 2 +- www/lib/CoreLibs/Combined/ArrayHandler.php | 85 +++-- www/lib/CoreLibs/Combined/DateTime.php | 42 ++- www/lib/CoreLibs/Convert/Byte.php | 4 +- www/lib/CoreLibs/Convert/Colors.php | 38 +- www/lib/CoreLibs/Convert/Html.php | 8 +- www/lib/CoreLibs/Convert/MimeAppName.php | 1 + www/lib/CoreLibs/Create/Hash.php | 6 + www/lib/CoreLibs/Create/RandomKey.php | 4 + www/lib/CoreLibs/DB/Extended/ArrayIO.php | 48 ++- www/lib/CoreLibs/DB/IO.php | 330 ++++++++++++------ www/lib/CoreLibs/DB/SQL/PgSQL.php | 119 +++++-- www/lib/CoreLibs/Debug/Logging.php | 50 ++- www/lib/CoreLibs/Debug/RunningTime.php | 10 +- www/lib/CoreLibs/Debug/Support.php | 4 +- www/lib/CoreLibs/Get/System.php | 4 +- .../Language/Core/CachedFileReader.php | 18 +- www/lib/CoreLibs/Language/Core/FileReader.php | 49 ++- .../CoreLibs/Language/Core/GetTextReader.php | 105 +++--- .../CoreLibs/Language/Core/StringReader.php | 2 + www/lib/CoreLibs/Language/Encoding.php | 3 +- www/lib/CoreLibs/Language/L10n.php | 4 + www/lib/CoreLibs/Output/Form/Elements.php | 15 +- www/lib/CoreLibs/Output/Form/Generate.php | 112 +++--- www/lib/CoreLibs/Output/Image.php | 128 ++++--- www/lib/CoreLibs/Output/Progressbar.php | 28 +- www/lib/FileUpload/Core/qqUploadedFile.php | 32 ++ .../FileUpload/Core/qqUploadedFileForm.php | 26 +- www/lib/FileUpload/Core/qqUploadedFileXhr.php | 33 +- www/lib/FileUpload/qqFileUploader.php | 79 +++-- www/lib/Test/Test.php | 61 ++++ 45 files changed, 1198 insertions(+), 593 deletions(-) create mode 100644 4dev/static_checker/phan.sh create mode 100644 4dev/static_checker/phpstan.sh create mode 100644 www/lib/FileUpload/Core/qqUploadedFile.php create mode 100644 www/lib/Test/Test.php diff --git a/4dev/static_checker/phan.sh b/4dev/static_checker/phan.sh new file mode 100644 index 00000000..1ee1ea25 --- /dev/null +++ b/4dev/static_checker/phan.sh @@ -0,0 +1 @@ +phan --progress-bar -C --analyze-twice diff --git a/4dev/static_checker/phpstan.sh b/4dev/static_checker/phpstan.sh new file mode 100644 index 00000000..14e637bc --- /dev/null +++ b/4dev/static_checker/phpstan.sh @@ -0,0 +1 @@ +phpstan diff --git a/phpstan-bootstrap.php b/phpstan-bootstrap.php index de809197..f6cdf446 100755 --- a/phpstan-bootstrap.php +++ b/phpstan-bootstrap.php @@ -1,9 +1,11 @@ -" . print_r(DB_CONFIG, true) . "
"; // DB client encoding print "DB Client encoding: " . $db->dbGetEncoding() . "
"; -while ($res = $db->dbReturn("SELECT * FROM max_test", 0, true)) { +while (is_array($res = $db->dbReturn("SELECT * FROM max_test", 0, true))) { print "TIME: " . $res['time'] . "
"; } print "CACHED DATA: 
" . print_r($db->cursor_ext, true) . "

"; -while ($res = $db->dbReturn("SELECT * FROM max_test")) { +while (is_array($res = $db->dbReturn("SELECT * FROM max_test"))) { print "[CACHED] TIME: " . $res['time'] . "
"; } +// alternate check for valid data +// while (($res = $db->dbReturn("SELECT * FROM max_test")) !== false) { +// print "[CACHED] TIME: " . $res['time'] . "
"; +// } print "
";
 $status = $db->dbExec("INSERT INTO foo (test) VALUES ('FOO TEST " . time() . "') RETURNING test");
diff --git a/www/configs/config.php b/www/configs/config.php
index eb2736e5..def6a7a3 100755
--- a/www/configs/config.php
+++ b/www/configs/config.php
@@ -33,7 +33,7 @@ if (!defined('DS')) {
 }
 // find trigger name "admin/" or "frontend/" in the getcwd() folder
 foreach (['admin', 'frontend'] as $folder) {
-	if (strstr(getcwd(), DS . $folder)) {
+	if (strstr(getcwd() ?: '', DS . $folder)) {
 		define('CONTENT_PATH', $folder . DS);
 		break;
 	}
diff --git a/www/includes/admin_header.php b/www/includes/admin_header.php
index f34f1219..3e200362 100644
--- a/www/includes/admin_header.php
+++ b/www/includes/admin_header.php
@@ -12,7 +12,7 @@ declare(strict_types=1);
 
 //------------------------------ variable init start
 // for dev test we set full error reporting; writes everything, except E_ERROR into logs/php_error-.log
-if ($DEBUG_ALL && $ENABLE_ERROR_HANDLING) {
+if (!empty($DEBUG_ALL) && !empty($ENABLE_ERROR_HANDLING)) {
 	include BASE . LIBS . "Error.Handling.php";
 }
 // predefine vars
@@ -82,7 +82,7 @@ if (!$login->login) {
 
 // automatic hide for DEBUG messages on live server
 // can be overridden when setting DEBUG_ALL_OVERRIDE on top of the script (for emergency debugging of one page only)
-if ((TARGET == 'live' || TARGET == 'remote') && !$DEBUG_ALL_OVERRIDE) {
+if ((TARGET == 'live' || TARGET == 'remote') && !empty($DEBUG_ALL_OVERRIDE)) {
 	foreach (['debug', 'echo', 'print'] as $target) {
 		$login->log->setLogLevelAll($target, false);
 		$cms->log->setLogLevelAll($target, false);
diff --git a/www/includes/edit_base.php b/www/includes/edit_base.php
index 17b3c464..f1b11b0f 100644
--- a/www/includes/edit_base.php
+++ b/www/includes/edit_base.php
@@ -175,7 +175,7 @@ if ($form->my_page_name == 'edit_order') {
 	$options_name = [];
 	$options_selected = [];
 	// DB read data for menu
-	while ($res = $form->dbReturn($q)) {
+	while (is_array($res = $form->dbReturn($q))) {
 		$row_data[] = [
 			"id" => $res[$table_name . "_id"],
 			"name" => $res["name"],
diff --git a/www/lib/CoreLibs/ACL/Login.php b/www/lib/CoreLibs/ACL/Login.php
index 9ecc33b2..5cd87ea5 100644
--- a/www/lib/CoreLibs/ACL/Login.php
+++ b/www/lib/CoreLibs/ACL/Login.php
@@ -72,44 +72,70 @@ use CoreLibs\Check\Password;
 
 class Login extends \CoreLibs\DB\IO
 {
+	/** @var string */
 	private $euid; // the user id var
 	// is set to one if login okay, or EUID is set and user is okay to access this page
+	/** @var bool */
 	private $permission_okay = false;
+	/** @var string */
 	public $login; // pressed login
+	/** @var string */
 	private $action; // master action command
+	/** @var string */
 	private $username; // login name
+	/** @var string */
 	private $password; // login password
+	/** @var string */
 	private $logout; // logout button
 	// login error code, can be matched to the array login_error_msg, which holds the string
+	/** @var int */
 	private $login_error = 0;
+	/** @var bool */
 	private $password_change = false; // if this is set to true, the user can change passwords
+	/** @var bool */
 	private $password_change_ok = false; // password change was successful
 	// can we reset password and mail to user with new password set screen
+	/** @var bool */
 	private $password_forgot = false;
+	/** @var bool */
 	private $password_forgot_ok = false; // password forgot mail send ok
+	/** @var string */
 	private $change_password;
+	/** @var string */
 	private $pw_username;
+	/** @var string */
 	private $pw_old_password;
+	/** @var string */
 	private $pw_new_password;
+	/** @var string */
 	private $pw_new_password_confirm;
+	/** @var array */
 	private $pw_change_deny_users = []; // array of users for which the password change is forbidden
+	/** @var string */
 	private $logout_target;
+	/** @var int */
 	private $max_login_error_count = -1;
+	/** @var array */
 	private $lock_deny_users = [];
 
 	// if we have password change we need to define some rules
+	/** @var int */
 	private $password_min_length = PASSWORD_MIN_LENGTH;
 	// max length is fixed as 255 (for input type max), if set highter, it will be set back to 255
+	/** @var int */
 	private $password_max_length = PASSWORD_MAX_LENGTH;
 	// can have several regexes, if nothing set, all is ok
+	/** @var array */
 	private $password_valid_chars = [
 		// '^(?=.*\d)(?=.*[A-Za-z])[0-9A-Za-z!@#$%]{8,}$',
 		// '^(?.*(\pL)u)(?=.*(\pN)u)(?=.*([^\pL\pN])u).{8,}',
 	];
 
 	// all possible login error conditions
+	/** @var array */
 	private $login_error_msg = [];
 	// this is an array holding all strings & templates passed from the outside (translation)
+	/** @var array */
 	private $login_template = [
 		'strings' => [],
 		'password_change' => '',
@@ -117,18 +143,23 @@ class Login extends \CoreLibs\DB\IO
 	];
 
 	// acl vars
+	/** @var array */
 	public $acl = [];
+	/** @var array */
 	public $default_acl_list = [];
 	// login html, if we are on an ajax page
+	/** @var string|null */
 	private $login_html = '';
+	/** @var bool */
 	private $login_is_ajax_page = false;
 
 	// language
+	/** @var \CoreLibs\Language\L10n */
 	public $l;
 
 	/**
 	 * constructor, does ALL, opens db, works through connection checks, closes itself
-	 * @param array $db_config db config array
+	 * @param array $db_config db config array
 	 */
 	public function __construct(array $db_config)
 	{
@@ -225,7 +256,7 @@ class Login extends \CoreLibs\DB\IO
 		$_SESSION['DEFAULT_ACL_LIST'] = [];
 		// read the current edit_access_right list into an array
 		$q = "SELECT level, type, name FROM edit_access_right WHERE level >= 0 ORDER BY level";
-		while ($res = $this->dbReturn($q)) {
+		while (is_array($res = $this->dbReturn($q))) {
 			// level to description format (numeric)
 			$this->default_acl_list[$res['level']] = [
 				'type' => $res['type'],
@@ -387,8 +418,11 @@ class Login extends \CoreLibs\DB\IO
 					// password match is done in script, against old plain or new blowfish encypted
 					. "(LOWER(username) = '" . $this->dbEscapeString(strtolower($this->username)) . "') ";
 				$res = $this->dbReturn($q);
-				// username is wrong, but we throw for wrong username and wrong password the same error
-				if (!$this->cursor_ext[md5($q)]['num_rows']) {
+				if (!is_array($res)) {
+					$this->login_error = 1009;
+					$this->permission_okay = false;
+				} elseif (!$this->cursor_ext[md5($q)]['num_rows']) {
+					// username is wrong, but we throw for wrong username and wrong password the same error
 					$this->login_error = 1010;
 				} else {
 					// if login errors is half of max errors and the last login error
@@ -426,7 +460,7 @@ class Login extends \CoreLibs\DB\IO
 						$_SESSION['EUID'] = $this->euid = $res['edit_user_id'];
 						// check if user is okay
 						$this->loginCheckPermissions();
-						if (!$this->login_error) {
+						if ($this->login_error == 0) {
 							// now set all session vars and read page permissions
 							$GLOBALS['DEBUG_ALL'] = $_SESSION['DEBUG_ALL'] = $res['debug'];
 							$GLOBALS['DB_DEBUG'] = $_SESSION['DB_DEBUG'] = $res['db_debug'];
@@ -470,6 +504,9 @@ class Login extends \CoreLibs\DB\IO
 								. "AND epa.enabled = 1 AND epa.edit_group_id = " . $res["edit_group_id"] . " "
 								. "ORDER BY ep.order_number";
 							while ($res = $this->dbReturn($q)) {
+								if (!is_array($res)) {
+									break;
+								}
 								// page id array for sub data readout
 								$edit_page_ids[$res['edit_page_id']] = $res['cuid'];
 								// create the array for pages
@@ -496,22 +533,20 @@ class Login extends \CoreLibs\DB\IO
 								$pages_acl[$res['filename']] = $res['level'];
 							} // for each page
 							// get the visible groups for all pages and write them to the pages
-							$_edit_page_id = 0;
 							$q = "SELECT epvg.edit_page_id, name, flag "
 								. "FROM edit_visible_group evp, edit_page_visible_group epvg "
 								. "WHERE evp.edit_visible_group_id = epvg.edit_visible_group_id "
 								. "AND epvg.edit_page_id IN (" . join(', ', array_keys($edit_page_ids)) . ") "
 								. "ORDER BY epvg.edit_page_id";
-							while ($res = $this->dbReturn($q)) {
+							while (is_array($res = $this->dbReturn($q))) {
 								$pages[$edit_page_ids[$res['edit_page_id']]]['visible'][$res['name']] = $res['flag'];
 							}
 							// get the same for the query strings
-							$_edit_page_id = 0;
 							$q = "SELECT eqs.edit_page_id, name, value, dynamic FROM edit_query_string eqs "
 								. "WHERE enabled = 1 AND edit_page_id "
 								. "IN (" . join(', ', array_keys($edit_page_ids)) . ") "
 								. "ORDER BY eqs.edit_page_id";
-							while ($res = $this->dbReturn($q)) {
+							while (is_array($res = $this->dbReturn($q))) {
 								$pages[$edit_page_ids[$res['edit_page_id']]]['query'][] = [
 									'name' => $res['name'],
 									'value' => $res['value'],
@@ -519,14 +554,13 @@ class Login extends \CoreLibs\DB\IO
 								];
 							}
 							// get the page content and add them to the page
-							$_edit_page_id = 0;
 							$q = "SELECT epc.edit_page_id, epc.name, epc.uid, epc.order_number, "
 								. "epc.online, ear.level, ear.type "
 								. "FROM edit_page_content epc, edit_access_right ear "
 								. "WHERE epc.edit_access_right_id = ear.edit_access_right_id AND "
 								. "epc.edit_page_id IN (" . join(', ', array_keys($edit_page_ids)) . ") "
 								. "ORDER BY epc.order_number";
-							while ($res = $this->dbReturn($q)) {
+							while (is_array($res = $this->dbReturn($q))) {
 								$pages[$edit_page_ids[$res['edit_page_id']]]['content'][$res['uid']] = [
 									'name' => $res['name'],
 									'uid' => $res['uid'],
@@ -550,13 +584,13 @@ class Login extends \CoreLibs\DB\IO
 							$unit_access = [];
 							$eauid = [];
 							$unit_acl = [];
-							while ($res = $this->dbReturn($q)) {
+							while (is_array($res = $this->dbReturn($q))) {
 								// read edit access data fields and drop them into the unit access array
 								$q_sub = "SELECT name, value "
 									. "FROM edit_access_data "
 									. "WHERE enabled = 1 AND edit_access_id = " . $res['edit_access_id'];
 								$ea_data = [];
-								while ($res_sub = $this->dbReturn($q_sub)) {
+								while (is_array($res_sub = $this->dbReturn($q_sub))) {
 									$ea_data[$res_sub['name']] = $res_sub['value'];
 								}
 								// build master unit array
@@ -583,7 +617,7 @@ class Login extends \CoreLibs\DB\IO
 							$_SESSION['EAID'] = $eauid;
 						} // user has permission to THIS page
 					} // user was not enabled or other login error
-					if ($this->login_error) {
+					if ($this->login_error && is_array($res)) {
 						$login_error_date_first = '';
 						if ($res['login_error_count'] == 0) {
 							$login_error_date_first = ", login_error_date_first = NOW()";
@@ -633,6 +667,11 @@ class Login extends \CoreLibs\DB\IO
 				. "AND filename = '" . $this->page_name . "' "
 				. "AND eg.enabled = 1 AND epa.enabled = 1";
 			$res = $this->dbReturnRow($q);
+			if (!is_array($res)) {
+				$this->login_error = 109;
+				$this->permission_okay = false;
+				return $this->permission_okay;
+			}
 			// unset mem limit if debug is set to 1
 			// if (
 			// 	($GLOBALS["DEBUG_ALL"] || $GLOBALS["DB_DEBUG"] ||
@@ -795,10 +834,14 @@ class Login extends \CoreLibs\DB\IO
 	/**
 	 * checks if this edit access id is valid
 	 * @param  int|null $edit_access_id access id pk to check
-	 * @return bool                     true/false: if the edit access is not in the valid list: false
+	 * @return bool                     true/false: if the edit access is not
+	 *                                  in the valid list: false
 	 */
 	public function loginCheckEditAccess($edit_access_id): bool
 	{
+		if ($edit_access_id === null) {
+			return false;
+		}
 		if (array_key_exists($edit_access_id, $this->acl['unit'])) {
 			return true;
 		} else {
@@ -943,7 +986,7 @@ class Login extends \CoreLibs\DB\IO
 
 	/**
 	 * prints out login html part if no permission (error) is set
-	 * @return ?string html data for login page, or null for nothing
+	 * @return string|null html data for login page, or null for nothing
 	 */
 	private function loginPrintLogin()
 	{
@@ -958,7 +1001,7 @@ class Login extends \CoreLibs\DB\IO
 				$LOGOUT_TARGET = "";
 			}
 
-			$html_string = $this->login_template['template'];
+			$html_string = (string)$this->login_template['template'];
 
 			// if password change is okay
 			if ($this->password_change) {
@@ -1099,6 +1142,8 @@ class Login extends \CoreLibs\DB\IO
 		$error_msgs = [
 			// actually obsolete
 			'100' => $this->l->__('Fatal Error: [EUID] came in as GET/POST!'),
+			// query errors
+			'1009' => $this->l->__('Fatal Error: Login query reading failed'),
 			// user not found
 			'1010' => $this->l->__('Fatal Error: Login Failed - Wrong Username or Password'),
 			// blowfish password wrong
@@ -1111,6 +1156,7 @@ class Login extends \CoreLibs\DB\IO
 			'103' => $this->l->__('Fatal Error: You do not have the rights to access this Page'),
 			'104' => $this->l->__('Fatal Error: Login Failed - User not enabled'),
 			'105' => $this->l->__('Fatal Error: Login Failed - User is locked'),
+			'109' => $this->l->__('Fatal Error: Check permission query reading failed'),
 			// actually this is an illegal user, but I mask it
 			'220' => $this->l->__('Fatal Error: Password change - The user could not be found'),
 			'200' => $this->l->__('Fatal Error: Password change - Please enter username and old password'),
@@ -1123,7 +1169,8 @@ class Login extends \CoreLibs\DB\IO
 			// for OK password change
 			'300' => $this->l->__('Success: Password change successful'),
 			// this is bad bad error
-			'9999' => $this->l->__('Fatal Error: necessary crypt engine could not be found. Login is impossible')
+			'9999' => $this->l->__('Fatal Error: necessary crypt engine could not be found. '
+				. 'Login is impossible'),
 		];
 
 		// if password change is okay
@@ -1280,7 +1327,7 @@ EOM;
 				'_FILES' => $_FILES,
 				'error' => $this->login_error
 		];
-		$data_binary = $this->dbEscapeBytea(bzcompress(serialize($_data_binary)));
+		$data_binary = $this->dbEscapeBytea((string)bzcompress(serialize($_data_binary)));
 		// SQL querie for log entry
 		$q = "INSERT INTO edit_log "
 			. "(username, password, euid, event_date, event, error, data, data_binary, page, "
@@ -1327,6 +1374,7 @@ EOM;
 	public function loginCheckEditAccessId(?int $edit_access_id): ?int
 	{
 		if (
+			$edit_access_id !== null &&
 			isset($_SESSION['UNIT']) &&
 			is_array($_SESSION['UNIT']) &&
 			!array_key_exists($edit_access_id, $_SESSION['UNIT'])
diff --git a/www/lib/CoreLibs/Admin/Backend.php b/www/lib/CoreLibs/Admin/Backend.php
index 38032744..b4c3b782 100644
--- a/www/lib/CoreLibs/Admin/Backend.php
+++ b/www/lib/CoreLibs/Admin/Backend.php
@@ -34,51 +34,80 @@ namespace CoreLibs\Admin;
 class Backend extends \CoreLibs\DB\IO
 {
 	// page name
+	/** @var array */
 	public $menu = [];
+	/** @var int|string */
 	public $menu_show_flag = 0; // top menu flag (mostly string)
 	// action ids
+	/** @var array */
 	public $action_list = [
 		'action', 'action_id', 'action_sub_id', 'action_yes', 'action_flag',
 		'action_menu', 'action_value', 'action_error', 'action_loaded'
 	];
+	/** @var string */
 	public $action;
+	/** @var string|int */
 	public $action_id;
+	/** @var string|int */
 	public $action_sub_id;
+	/** @var string|int|bool */
 	public $action_yes;
+	/** @var string */
 	public $action_flag;
+	/** @var string */
 	public $action_menu;
+	/** @var string */
 	public $action_loaded;
+	/** @var string */
 	public $action_value;
+	/** @var string */
 	public $action_error;
 	// ACL array variable if we want to set acl data from outisde
+	/** @var array */
 	public $acl = [];
+	/** @var int */
 	public $default_acl;
 	// queue key
+	/** @var string */
 	public $queue_key;
 	// the current active edit access id
+	/** @var int */
 	public $edit_access_id;
 	// error/warning/info messages
+	/** @var array */
 	public $messages = [];
+	/** @var int */
 	public $error = 0;
+	/** @var int */
 	public $warning = 0;
+	/** @var int */
 	public $info = 0;
 	// internal lang & encoding vars
+	/** @var string */
 	public $lang_dir = '';
+	/** @var string */
 	public $lang;
+	/** @var string */
 	public $lang_short;
+	/** @var string */
 	public $encoding;
 	// language
+	/** @var \CoreLibs\Language\L10n */
 	public $l;
 	// smarty publics [end processing in smarty class]
+	/** @var array */
 	public $DATA;
+	/** @var array */
 	public $HEADER;
+	/** @var array */
 	public $DEBUG_DATA;
+	/** @var array */
 	public $CONTENT_DATA;
 
 	// CONSTRUCTOR / DECONSTRUCTOR |====================================>
 	/**
 	 * main class constructor
-	 * @param array $db_config db config array
+	 * @param array $db_config db config array
 	 */
 	public function __construct(array $db_config)
 	{
@@ -151,7 +180,7 @@ class Backend extends \CoreLibs\DB\IO
 
 	/**
 	 * set internal ACL from login ACL
-	 * @param array $acl login acl array
+	 * @param array $acl login acl array
 	 */
 	public function setACL(array $acl): void
 	{
@@ -160,16 +189,16 @@ class Backend extends \CoreLibs\DB\IO
 
 	/**
 	 * writes all action vars plus other info into edit_log tabl
-	 * @param  string       $event      any kind of event description,
-	 * @param  string|array $data       any kind of data related to that event
-	 * @param  string       $write_type write type can bei STRING or BINARY
-	 * @return void                     has no return
+	 * @param  string              $event      any kind of event description,
+	 * @param  string|array $data       any kind of data related to that event
+	 * @param  string              $write_type write type can bei STRING or BINARY
+	 * @return void
 	 */
 	public function adbEditLog(string $event = '', $data = '', string $write_type = 'STRING'): void
 	{
 		$data_binary = '';
 		if ($write_type == 'BINARY') {
-			$data_binary = $this->dbEscapeBytea(bzcompress(serialize($data)));
+			$data_binary = $this->dbEscapeBytea((string)bzcompress(serialize($data)));
 			$data = 'see bzip compressed data_binary field';
 		}
 		if ($write_type == 'STRING') {
@@ -178,16 +207,15 @@ class Backend extends \CoreLibs\DB\IO
 		}
 
 		// check schema
+		$SCHEMA = 'public';
 		if (defined('LOGIN_DB_SCHEMA') && !empty(LOGIN_DB_SCHEMA)) {
 			$SCHEMA = LOGIN_DB_SCHEMA;
 		} elseif ($this->dbGetSchema()) {
 			$SCHEMA = $this->dbGetSchema();
 		} elseif (defined('PUBLIC_SCHEMA')) {
 			$SCHEMA = PUBLIC_SCHEMA;
-		} else {
-			$SCHEMA = 'public';
 		}
-
+		/** @phpstan-ignore-next-line for whatever reason $SCHEMA is seen as possible array */
 		$q = "INSERT INTO " . $SCHEMA . ".edit_log "
 			. "(euid, event_date, event, data, data_binary, page, "
 			. "ip, user_agent, referer, script_name, query_string, server_name, http_host, "
@@ -225,8 +253,8 @@ class Backend extends \CoreLibs\DB\IO
 
 	/**
 	 * menu creater (from login menu session pages)
-	 * @param  int $flag visible flag trigger
-	 * @return array     menu array for output on page (smarty)
+	 * @param  int $flag    visible flag trigger
+	 * @return array menu array for output on page (smarty)
 	 */
 	public function adbTopMenu(int $flag = 0): array
 	{
@@ -373,10 +401,10 @@ class Backend extends \CoreLibs\DB\IO
 	/**
 	 * @deprecated
 	 * creates out of a normal db_return array an assoc array
-	 * @param  array           $db_array input array
+	 * @param  array    $db_array input array
 	 * @param  string|int|bool $key      key
 	 * @param  string|int|bool $value    value
-	 * @return array                     associative array
+	 * @return array              associative array
 	 * @deprecated \CoreLibs\Combined\ArrayHandler::genAssocArray()
 	 */
 	public function adbAssocArray(array $db_array, $key, $value): array
@@ -407,16 +435,24 @@ class Backend extends \CoreLibs\DB\IO
 	/**
 	 * @deprecated
 	 * converts picture to a thumbnail with max x and max y size
-	 * @param  string      $pic          source image file with or without path
-	 * @param  int         $size_x       maximum size width
-	 * @param  int         $size_y       maximum size height
-	 * @param  string      $dummy        empty, or file_type to show an icon instead of nothing if file is not found
-	 * @param  string      $path         if source start is not ROOT path, if empty ROOT is choosen
-	 * @return string|bool               thumbnail name, or false for error
+	 * @param  string      $pic    source image file with or without path
+	 * @param  int         $size_x maximum size width
+	 * @param  int         $size_y maximum size height
+	 * @param  string      $dummy  empty, or file_type to show an icon
+	 *                             instead of nothing if file is not found
+	 * @param  string      $path   if source start is not ROOT path
+	 *                             if empty ROOT is choosen
+	 * @return string|bool         thumbnail name, or false for error
 	 * @deprecated \CoreLibs\Output\Image::createThumbnail()
 	 */
-	public function adbCreateThumbnail($pic, $size_x, $size_y, $dummy = '', $path = "", $cache = "")
-	{
+	public function adbCreateThumbnail(
+		string $pic,
+		int $size_x,
+		int $size_y,
+		string $dummy = '',
+		string $path = '',
+		string $cache = ''
+	) {
 		trigger_error(
 			'Method ' . __METHOD__ . ' is deprecated: \CoreLibs\Output\Image::createThumbnail()',
 			E_USER_DEPRECATED
@@ -426,10 +462,10 @@ class Backend extends \CoreLibs\DB\IO
 
 	/**
 	 * wrapper function to fill up the mssages array
-	 * @param  string $level info/warning/error
-	 * @param  string $msg   string, can be printf formated
-	 * @param  array  $vars  optional data for a possible printf formated msg
-	 * @return void          has no return
+	 * @param  string       $level info/warning/error
+	 * @param  string       $msg   string, can be printf formated
+	 * @param  array $vars  optional data for a possible printf formated msg
+	 * @return void                has no return
 	 */
 	public function adbMsg(string $level, string $msg, array $vars = []): void
 	{
diff --git a/www/lib/CoreLibs/Basic.php b/www/lib/CoreLibs/Basic.php
index 84064aea..8cadcb53 100644
--- a/www/lib/CoreLibs/Basic.php
+++ b/www/lib/CoreLibs/Basic.php
@@ -57,24 +57,34 @@ namespace CoreLibs;
 class Basic
 {
 	// page and host name
+	/** @var string */
 	public $page_name;
+	/** @var string */
 	public $host_name;
+	/** @var int */
 	public $host_port;
 	// logging interface, Debug\Logging class
+	/** @var \CoreLibs\Debug\Logging */
 	public $log;
 
 	// email valid checks
+	/** @var array */
 	public $email_regex_check = [];
+	/** @var string */
 	public $email_regex; // regex var for email check
 
 	// data path for files
+	/** @var array */
 	public $data_path = [];
 
 	// session name
+	/** @var string */
 	private $session_name = '';
+	/** @var string */
 	private $session_id = '';
 
 	// ajax flag
+	/** @var bool */
 	protected $ajax_page_flag = false;
 
 	/**
@@ -154,7 +164,7 @@ class Basic
 			// start session
 			session_start();
 			// set internal session id, we can use that later for protection check
-			$this->session_id = session_id();
+			$this->session_id = session_id() ?: '';
 		}
 	}
 
@@ -264,14 +274,14 @@ class Basic
 	 * eg $foo->debugFor('print', 'on', ['LOG', 'DEBUG', 'INFO']);
 	 * @param  string $type  error, echo, print
 	 * @param  string $flag  on/off
-	 *         array  $array of levels to turn on/off debug
+	 *         array $array of levels to turn on/off debug
 	 * @return void          has no return
 	 * @deprecated Use $basic->log->debugFor() instead
 	 */
 	public function debugFor(string $type, string $flag): void
 	{
 		trigger_error('Method ' . __METHOD__ . ' is deprecated, use $basic->log->debugFor() or use \CoreLibs\Debug\Logging() class', E_USER_DEPRECATED);
-		/** @phan-suppress-next-line PhanTypeMismatchArgumentReal */
+		/** @phan-suppress-next-line PhanTypeMismatchArgumentReal @phpstan-ignore-next-line */
 		$this->log->debugFor(...[func_get_args()]);
 	}
 
@@ -350,8 +360,8 @@ class Basic
 	/**
 	 * merges the given error array with the one from this class
 	 * only merges visible ones
-	 * @param  array  $error_msg error array
-	 * @return void              has no return
+	 * @param  array  $error_msg error array
+	 * @return void
 	 * @deprecated Use $basic->log->mergeErrors() instead
 	 */
 	public function mergeErrors(array $error_msg = []): void
@@ -391,8 +401,8 @@ class Basic
 
 	/**
 	 * prints a html formatted (pre) array
-	 * @param  array  $array any array
-	 * @return string        formatted array for output with 
 tag added
+	 * @param  array $array any array
+	 * @return string              formatted array for output with 
 tag added
 	 * @deprecated Use $this->log->prAr() instead
 	 */
 	public function printAr(array $array): string
@@ -405,7 +415,8 @@ class Basic
 	 * eg for debugging, this function does this
 	 * call this method in the child method and you get the parent function that called
 	 * @param  int    $level debug level, default 2
-	 * @return ?string       null or the function that called the function where this method is called
+	 * @return ?string       null or the function that called the function
+	 *                       where this method is called
 	 * @deprecated Use \CoreLibs\Debug\Support::getCallerMethod() instead
 	 */
 	public static function getCallerMethod(int $level = 2): ?string
@@ -471,7 +482,7 @@ class Basic
 	 * returns 'checked' or 'selected' if okay
 	 * $needle is a var, $haystack an array or a string
 	 * **** THE RETURN: VALUE WILL CHANGE TO A DEFAULT NULL IF NOT FOUND ****
-	 * @param  array|string $haystack (search in) haystack can be an array or a string
+	 * @param  array|string $haystack (search in) haystack can be an array or a string
 	 * @param  string       $needle   needle (search for)
 	 * @param  int          $type     type: 0: returns selected, 1, returns checked
 	 * @return ?string                returns checked or selected, else returns null
@@ -504,7 +515,7 @@ class Basic
 
 	/**
 	 * get the host name without the port as given by the SELF var
-	 * @return array host name/port name
+	 * @return array host name/port name
 	 * @deprecated Use \CoreLibs\Get\System::getHostName() instead
 	 */
 	public function getHostName(): array
@@ -563,9 +574,9 @@ class Basic
 	 * searches key = value in an array / array
 	 * only returns the first one found
 	 * @param  string|int  $needle     needle (search for)
-	 * @param  array       $haystack   haystack (search in)
+	 * @param  array       $haystack   haystack (search in)
 	 * @param  string|null $key_lookin the key to look out for, default empty
-	 * @return array                   array with the elements where the needle can be
+	 * @return array                   array with the elements where the needle can be
 	 *                                 found in the haystack array
 	 * @deprecated Use \CoreLibs\Combined\ArrayHandler::arraySearchRecursive() instead
 	 */
@@ -577,11 +588,11 @@ class Basic
 
 	/**
 	 * recursive array search function, which returns all found not only the first one
-	 * @param  string|int $needle   needle (search for)
-	 * @param  array      $haystack haystack (search in)
-	 * @param  string|int $key      the key to look for in
-	 * @param  array|null $path     recursive call for previous path
-	 * @return ?array               all array elements paths where the element was found
+	 * @param  string|int   $needle   needle (search for)
+	 * @param  array $haystack haystack (search in)
+	 * @param  string|int   $key      the key to look for in
+	 * @param  array|null $path recursive call for previous path
+	 * @return ?array           all array elements paths where the element was found
 	 * @deprecated Use \CoreLibs\Combined\ArrayHandler::arraySearchRecursiveAll() instead
 	 */
 	public static function arraySearchRecursiveAll($needle, array $haystack, $key, ?array $path = null): ?array
@@ -592,7 +603,7 @@ class Basic
 
 	/**
 	 * array search simple. looks for key, value Combined, if found, returns true
-	 * @param  array      $array array (search in)
+	 * @param  array      $array array (search in)
 	 * @param  string|int $key   key (key to search in)
 	 * @param  string|int $value value (what to find)
 	 * @return bool              true on found, false on not found
@@ -611,7 +622,7 @@ class Basic
 	 *         ...   etc
 	 *         bool  key flag: true: handle keys as string or int
 	 *               default false: all keys are string
-	 * @return array|bool merged array
+	 * @return array|bool merged array
 	 * @deprecated MUSER BE CONVERTED TO \CoreLibs\Combined\ArrayHandler::arrayMergeRecursive() instead
 	 */
 	public static function arrayMergeRecursive()
@@ -625,9 +636,9 @@ class Basic
 	 * array_diff only checks elements from A that are not in B, but not the
 	 * other way around.
 	 * Note that like array_diff this only checks first level values not keys
-	 * @param  array  $a array to compare a
-	 * @param  array  $b array to compare b
-	 * @return array     array with missing elements from a & b
+	 * @param  array  $a array to compare a
+	 * @param  array  $b array to compare b
+	 * @return array     array with missing elements from a & b
 	 * @deprecated Use \CoreLibs\Combined\ArrayHandler::arrayDiff() instead
 	 */
 	public static function arrayDiff(array $a, array $b): array
@@ -639,9 +650,9 @@ class Basic
 	/**
 	 * search for the needle array elements in haystack and return the ones found as an array,
 	 * is there nothing found, it returns FALSE (boolean)
-	 * @param  array $needle   elements to search for
-	 * @param  array $haystack array where the $needle elements should be searched int
-	 * @return array|bool      either the found elements or false for nothing found or error
+	 * @param  array $needle   elements to search for
+	 * @param  array $haystack array where the $needle elements should be searched int
+	 * @return array|bool      either the found elements or false for nothing found or error
 	 * @deprecated Use \CoreLibs\Combined\ArrayHandler::inArrayAny() instead
 	 */
 	public static function inArrayAny(array $needle, array $haystack)
@@ -652,11 +663,11 @@ class Basic
 
 	/**
 	 * creates out of a normal db_return array an assoc array
-	 * @param  array           $db_array return array from the database
+	 * @param  array           $db_array return array from the database
 	 * @param  string|int|bool $key      key set, false for not set
 	 * @param  string|int|bool $value    value set, false for not set
 	 * @param  bool            $set_only flag to return all (default), or set only
-	 * @return array                     associative array
+	 * @return array                     associative array
 	 * @deprecated Use \CoreLibs\Combined\ArrayHandler::genAssocArray() instead
 	 */
 	public static function genAssocArray(array $db_array, $key, $value, bool $set_only = false): array
@@ -668,7 +679,7 @@ class Basic
 	/**
 	 * [NOTE]: This is an old function and is deprecated
 	 * wrapper for join, but checks if input is an array and if not returns null
-	 * @param  array  $array        array to convert
+	 * @param  array  $array        array to convert
 	 * @param  string $connect_char connection character
 	 * @return string               joined string
 	 * @deprecated use join() instead
@@ -685,8 +696,8 @@ class Basic
 	/**
 	 * converts multi dimensional array to a flat array
 	 * does NOT preserve keys
-	 * @param  array  $array ulti dimensionial array
-	 * @return array         flattened array
+	 * @param  array  $array ulti dimensionial array
+	 * @return array         flattened array
 	 * @deprecated Use \CoreLibs\Combined\ArrayHandler::flattenArray() instead
 	 */
 	public static function flattenArray(array $array): array
@@ -697,8 +708,8 @@ class Basic
 
 	/**
 	 * will loop through an array recursivly and write the array keys back
-	 * @param  array  $array  multidemnsional array to flatten
-	 * @return array          flattened keys array
+	 * @param  array  $array  multidemnsional array to flatten
+	 * @return array          flattened keys array
 	 * @deprecated Use \CoreLibs\Combined\ArrayHandler::flattenArrayKey() instead
 	 */
 	public static function flattenArrayKey(array $array/*, array $return = []*/): array
@@ -710,9 +721,9 @@ class Basic
 	/**
 	 * searches for key -> value in an array tree and writes the value one level up
 	 * this will remove this leaf will all other values
-	 * @param  array      $array  array (nested)
+	 * @param  array      $array  array (nested)
 	 * @param  string|int $search key to find that has no sub leaf and will be pushed up
-	 * @return array              modified, flattened array
+	 * @return array              modified, flattened array
 	 * @deprecated Use \CoreLibs\Combined\ArrayHandler::arrayFlatForKey() instead
 	 */
 	public static function arrayFlatForKey(array $array, $search): array
@@ -923,7 +934,7 @@ class Basic
 	 * @param  string $start_date   valid start date (y/m/d)
 	 * @param  string $end_date     valid end date (y/m/d)
 	 * @param  bool   $return_named return array type, false (default), true for named
-	 * @return array                0/overall, 1/weekday, 2/weekend
+	 * @return array                0/overall, 1/weekday, 2/weekend
 	 * @deprecated Use \CoreLibs\Combined\DateTime::calcDaysInterval() instead
 	 */
 	public static function calcDaysInterval($start_date, $end_date, bool $return_named = false): array
@@ -1033,7 +1044,7 @@ class Basic
 	 * @param  string     $string        string to test
 	 * @param  string     $from_encoding encoding of string to test
 	 * @param  string     $to_encoding   target encoding
-	 * @return bool|array            false if no error or array with failed characters
+	 * @return bool|array         false if no error or array with failed characters
 	 * @deprecated use \CoreLibs\Language\Encoding::checkConvertEncoding() instead
 	 */
 	public function checkConvertEncoding(string $string, string $from_encoding, string $to_encoding)
@@ -1228,7 +1239,8 @@ class Basic
 	 * @param  string            $hexStr         RGB hexstring
 	 * @param  bool              $returnAsString flag to return as string
 	 * @param  string            $seperator      string seperator: default: ","
-	 * @return string|array|bool                 false on error or array with RGB or a string with the seperator
+	 * @return string|array|bool          false on error or array with RGB or
+	 *                                           a string with the seperator
 	 * @deprecated use \CoreLibs\Convert\Colors::hex2rgb() instead
 	 */
 	public static function hex2rgb(string $hexStr, bool $returnAsString = false, string $seperator = ',')
@@ -1275,7 +1287,7 @@ class Basic
 	 * @param  int   $red   red 0-255
 	 * @param  int   $green green 0-255
 	 * @param  int   $blue  blue 0-255
-	 * @return array        Hue, Sat, Brightness/Value
+	 * @return array        Hue, Sat, Brightness/Value
 	 * @deprecated use \CoreLibs\Convert\Colors::rgb2hsb() instead
 	 */
 	public static function rgb2hsb(int $red, int $green, int $blue): array
@@ -1289,7 +1301,7 @@ class Basic
 	 * @param  int    $H hue 0-360
 	 * @param  float  $S saturation 0-1 (float)
 	 * @param  float  $V brightness/value 0-1 (float)
-	 * @return array     0 red/1 green/2 blue array
+	 * @return array     0 red/1 green/2 blue array
 	 * @deprecated use \CoreLibs\Convert\Colors::hsb2rgb() instead
 	 */
 	public static function hsb2rgb(int $H, float $S, float $V): array
@@ -1305,7 +1317,7 @@ class Basic
 	 * @param  int    $r red 0-255
 	 * @param  int    $g green 0-255
 	 * @param  int    $b blue 0-255
-	 * @return array     hue/sat/luminance
+	 * @return array     hue/sat/luminance
 	 * @deprecated use \CoreLibs\Convert\Colors::rgb2hsl() instead
 	 */
 	public static function rgb2hsl(int $r, int $g, int $b): array
@@ -1319,7 +1331,7 @@ class Basic
 	 * @param  int    $h hue: 0-360 (degrees)
 	 * @param  float  $s saturation: 0-1
 	 * @param  float  $l luminance: 0-1
-	 * @return array     red/blue/green 0-255 each
+	 * @return array     red/blue/green 0-255 each
 	 * @deprecated use \CoreLibs\Convert\Colors::hsl2rgb() instead
 	 */
 	public static function hsl2rgb(int $h, float $s, float $l): array
@@ -1538,7 +1550,7 @@ class Basic
 	 * @param  string|null $json     a json string, or null data
 	 * @param  bool        $override if set to true, then on json error
 	 *                               set original value as array
-	 * @return array                 returns an array from the json values
+	 * @return array                 returns an array from the json values
 	 * @deprecated use \CoreLibs\Check\Jason::jsonConvertToArray() instead
 	 */
 	public function jsonConvertToArray(?string $json, bool $override = false): array
diff --git a/www/lib/CoreLibs/Check/Email.php b/www/lib/CoreLibs/Check/Email.php
index 9c87b105..982a38c3 100644
--- a/www/lib/CoreLibs/Check/Email.php
+++ b/www/lib/CoreLibs/Check/Email.php
@@ -7,6 +7,7 @@ namespace CoreLibs\Check;
 class Email
 {
 	// this is for error check parts in where the email regex failed
+	/** @var array */
 	private static $email_regex_check = [
 		0 => "^[A-Za-z0-9!#$%&'*+\-\/=?^_`{|}~][A-Za-z0-9!#$%:\(\)&'*+\-\/=?^_`{|}~\.]{0,63}@"
 			. "[a-zA-Z0-9\-]+(\.[a-zA-Z0-9\-]{1,})*\.([a-zA-Z]{2,}){1}$", // MASTER
@@ -19,6 +20,7 @@ class Email
 		7 => "@.*\.$" // ends with a dot, top level, domain missing
 	];
 	// the array with the mobile types that are valid
+	/** @var array */
 	private static $mobile_email_type = [
 		'.*@docomo\.ne\.jp$' => 'keitai_docomo',
 		// correct are a[2-4], b2, c[1-9], e[2-9], h[2-4], t[1-9]
@@ -57,6 +59,7 @@ class Email
 		'.*@emobile-s\.ne\.jp$' => 'keitai_willcom_emnet' # e-mobile, group will willcom
 	];
 	// short list for mobile email types
+	/** @var array */
 	private static $mobile_email_type_short = [
 		'keitai_docomo' => 'docomo',
 		'keitai_kddi_ezweb' => 'kddi',
@@ -116,7 +119,7 @@ class Email
 	 * get the full check array
 	 * this will be deprected at some point
 	 *
-	 * @return array
+	 * @return array
 	 */
 	public static function getEmailRegexCheck(): array
 	{
@@ -132,9 +135,11 @@ class Email
 	/**
 	 * guesses the email type (mostly for mobile) from the domain
 	 * if second is set to true, it will return short naming scheme (only provider)
-	 * @param  string $email email string
-	 * @param  bool   $short default false, if true, returns only short type (pc instead of pc_html)
-	 * @return string|bool   email type, eg "pc", "docomo", etc, false for invalid short type
+	 * @param  string      $email email string
+	 * @param  bool        $short default false, if true,
+	 *                            returns only short type (pc instead of pc_html)
+	 * @return string|bool        email type, eg "pc", "docomo", etc,
+	 *                            false for invalid short type
 	 */
 	public static function getEmailType(string $email, bool $short = false)
 	{
diff --git a/www/lib/CoreLibs/Check/File.php b/www/lib/CoreLibs/Check/File.php
index c4e9ce5b..89112605 100644
--- a/www/lib/CoreLibs/Check/File.php
+++ b/www/lib/CoreLibs/Check/File.php
@@ -34,9 +34,12 @@ class File
 			is_readable($file)
 		) {
 			$f = fopen($file, 'rb');
+			if (!is_resource($f)) {
+				return 0;
+			}
 			$lines = 0;
 			while (!feof($f)) {
-				$lines += substr_count(fread($f, 8192), "\n");
+				$lines += substr_count(fread($f, 8192) ?: '', "\n");
 			}
 			fclose($f);
 		} else {
diff --git a/www/lib/CoreLibs/Check/Jason.php b/www/lib/CoreLibs/Check/Jason.php
index 32b36c56..c40e8bc8 100644
--- a/www/lib/CoreLibs/Check/Jason.php
+++ b/www/lib/CoreLibs/Check/Jason.php
@@ -12,6 +12,7 @@ namespace CoreLibs\Check;
 
 class Jason
 {
+	/** @var int */
 	private static $json_last_error;
 
 	/**
@@ -23,7 +24,7 @@ class Jason
 	 * @param  string|null $json     a json string, or null data
 	 * @param  bool        $override if set to true, then on json error
 	 *                               set original value as array
-	 * @return array                 returns an array from the json values
+	 * @return array          returns an array from the json values
 	 */
 	public static function jsonConvertToArray(?string $json, bool $override = false): array
 	{
diff --git a/www/lib/CoreLibs/Check/PhpVersion.php b/www/lib/CoreLibs/Check/PhpVersion.php
index 809a8b05..8f906b6c 100644
--- a/www/lib/CoreLibs/Check/PhpVersion.php
+++ b/www/lib/CoreLibs/Check/PhpVersion.php
@@ -35,7 +35,7 @@ class PhpVersion
 		}
 		// set the php version id
 		if (!defined('PHP_VERSION_ID')) {
-			$version = explode('.', phpversion());
+			$version = explode('.', phpversion() ?: '');
 			// creates something like 50107
 			define('PHP_VERSION_ID', (int)$version[0] * 10000 + (int)$version[1] * 100 + (int)$version[2]);
 		}
diff --git a/www/lib/CoreLibs/Combined/ArrayHandler.php b/www/lib/CoreLibs/Combined/ArrayHandler.php
index 21737b9e..a4e6ff32 100644
--- a/www/lib/CoreLibs/Combined/ArrayHandler.php
+++ b/www/lib/CoreLibs/Combined/ArrayHandler.php
@@ -13,11 +13,11 @@ class ArrayHandler
 	/**
 	 * searches key = value in an array / array
 	 * only returns the first one found
-	 * @param  string|int  $needle     needle (search for)
-	 * @param  array       $haystack   haystack (search in)
-	 * @param  string|null $key_lookin the key to look out for, default empty
-	 * @return array                   array with the elements where the needle can be
-	 *                                 found in the haystack array
+	 * @param  string|int   $needle     needle (search for)
+	 * @param  array $haystack   haystack (search in)
+	 * @param  string|null  $key_lookin the key to look out for, default empty
+	 * @return array             array with the elements where the needle can be
+	 *                                  found in the haystack array
 	 */
 	public static function arraySearchRecursive($needle, array $haystack, ?string $key_lookin = null): array
 	{
@@ -68,11 +68,11 @@ class ArrayHandler
 
 	/**
 	 * recursive array search function, which returns all found not only the first one
-	 * @param  string|int $needle   needle (search for)
-	 * @param  array      $haystack haystack (search in)
-	 * @param  string|int $key      the key to look for in
-	 * @param  array|null $path     recursive call for previous path
-	 * @return ?array               all array elements paths where the element was found
+	 * @param  string|int        $needle   needle (search for)
+	 * @param  array      $haystack haystack (search in)
+	 * @param  string|int        $key      the key to look for in
+	 * @param  array|null $path     recursive call for previous path
+	 * @return array|null           all array elements paths where the element was found
 	 */
 	public static function arraySearchRecursiveAll($needle, array $haystack, $key, ?array $path = null): ?array
 	{
@@ -82,41 +82,40 @@ class ArrayHandler
 				'level' => 0,
 				'work' => []
 			];
-		}
-		// init sub sets if not set
-		if (!isset($path['level'])) {
-			$path['level'] = 0;
-		}
-		if (!isset($path['work'])) {
-			$path['work'] = [];
+		} else {
+			// init sub sets if not set
+			if (!isset($path['level'])) {
+				$path['level'] = 0;
+			}
+			if (!isset($path['work'])) {
+				$path['work'] = [];
+			}
 		}
 		// should not be needed because it would trigger a php mehtod error
 		if (!is_array($haystack)) {
 			$haystack = [];
 		}
 
-		// @phan HACK
-		$path['level'] = $path['level'] ?? 0;
 		// go through the array,
 		foreach ($haystack as $_key => $_value) {
 			if (is_scalar($_value) && $_value == $needle && !$key) {
 				// only value matches
-				$path['work'][$path['level']] = $_key;
+				$path['work'][$path['level'] ?? 0] = $_key;
 				$path['found'][] = $path['work'];
 			} elseif (is_scalar($_value) && $_value == $needle && $_key == $key) {
 				// key and value matches
-				$path['work'][$path['level']] = $_key;
+				$path['work'][$path['level'] ?? 0] = $_key;
 				$path['found'][] = $path['work'];
 			} elseif (is_array($_value)) {
 				// add position to working
-				$path['work'][$path['level']] = $_key;
+				$path['work'][$path['level'] ?? 0] = $_key;
 				// we will up a level
 				$path['level'] += 1;
 				// call recursive
 				$path = self::arraySearchRecursiveAll($needle, $_value, $key, $path);
 			}
 		}
-		// @phan HACK
+		// be 100% sure the array elements are set
 		$path['level'] = $path['level'] ?? 0;
 		$path['work'] = $path['work'] ?? [];
 		// cut all that is >= level
@@ -128,10 +127,10 @@ class ArrayHandler
 
 	/**
 	 * array search simple. looks for key, value combination, if found, returns true
-	 * @param  array      $array search in as array
-	 * @param  string|int $key   key (key to search in)
-	 * @param  string|int $value value (what to find)
-	 * @return bool              true on found, false on not found
+	 * @param  array $array search in as array
+	 * @param  string|int  $key    key (key to search in)
+	 * @param  string|int  $value  value (what to find)
+	 * @return bool                true on found, false on not found
 	 */
 	public static function arraySearchSimple(array $array, $key, $value): bool
 	{
@@ -160,7 +159,7 @@ class ArrayHandler
 	 *         ...   etc
 	 *         bool  key flag: true: handle keys as string or int
 	 *               default false: all keys are string
-	 * @return array|bool merged array
+	 * @return array|bool merged array
 	 */
 	public static function arrayMergeRecursive()
 	{
@@ -215,9 +214,9 @@ class ArrayHandler
 	 * array_diff only checks elements from A that are not in B, but not the
 	 * other way around.
 	 * Note that like array_diff this only checks first level values not keys
-	 * @param  array  $a array to compare a
-	 * @param  array  $b array to compare b
-	 * @return array     array with missing elements from a & b
+	 * @param  array  $a array to compare a
+	 * @param  array  $b array to compare b
+	 * @return array     array with missing elements from a & b
 	 */
 	public static function arrayDiff(array $a, array $b): array
 	{
@@ -228,9 +227,9 @@ class ArrayHandler
 	/**
 	 * search for the needle array elements in haystack and return the ones found as an array,
 	 * is there nothing found, it returns FALSE (boolean)
-	 * @param  array $needle   elements to search for
-	 * @param  array $haystack array where the $needle elements should be searched int
-	 * @return array|bool      either the found elements or false for nothing found or error
+	 * @param  array $needle   elements to search for
+	 * @param  array $haystack array where the $needle elements should be searched int
+	 * @return array|bool      either the found elements or false for nothing found or error
 	 */
 	public static function inArrayAny(array $needle, array $haystack)
 	{
@@ -255,11 +254,11 @@ class ArrayHandler
 
 	/**
 	 * creates out of a normal db_return array an assoc array
-	 * @param  array           $db_array return array from the database
+	 * @param  array    $db_array return array from the database
 	 * @param  string|int|bool $key      key set, false for not set
 	 * @param  string|int|bool $value    value set, false for not set
 	 * @param  bool            $set_only flag to return all (default), or set only
-	 * @return array                     associative array
+	 * @return array              associative array
 	 */
 	public static function genAssocArray(array $db_array, $key, $value, bool $set_only = false): array
 	{
@@ -285,8 +284,8 @@ class ArrayHandler
 	/**
 	 * converts multi dimensional array to a flat array
 	 * does NOT preserve keys
-	 * @param  array  $array ulti dimensionial array
-	 * @return array         flattened array
+	 * @param  array $array ulti dimensionial array
+	 * @return array        flattened array
 	 */
 	public static function flattenArray(array $array): array
 	{
@@ -302,8 +301,8 @@ class ArrayHandler
 
 	/**
 	 * will loop through an array recursivly and write the array keys back
-	 * @param  array  $array  multidemnsional array to flatten
-	 * @return array          flattened keys array
+	 * @param  array $array  multidemnsional array to flatten
+	 * @return array         flattened keys array
 	 */
 	public static function flattenArrayKey(array $array): array
 	{
@@ -320,9 +319,9 @@ class ArrayHandler
 	/**
 	 * searches for key -> value in an array tree and writes the value one level up
 	 * this will remove this leaf will all other values
-	 * @param  array      $array  nested array
-	 * @param  string|int $search key to find that has no sub leaf and will be pushed up
-	 * @return array              modified, flattened array
+	 * @param  array $array  nested array
+	 * @param  string|int   $search key to find that has no sub leaf and will be pushed up
+	 * @return array         modified, flattened array
 	 */
 	public static function arrayFlatForKey(array $array, $search): array
 	{
diff --git a/www/lib/CoreLibs/Combined/DateTime.php b/www/lib/CoreLibs/Combined/DateTime.php
index 2ea37bee..61b29a53 100644
--- a/www/lib/CoreLibs/Combined/DateTime.php
+++ b/www/lib/CoreLibs/Combined/DateTime.php
@@ -38,7 +38,7 @@ class DateTime
 	{
 		// check if the timestamp has any h/m/s/ms inside, if yes skip
 		if (!preg_match("/(h|m|s|ms)/", (string)$timestamp)) {
-			list($timestamp, $ms) = array_pad(explode('.', (string)round($timestamp, 4)), 2, null);
+			list($timestamp, $ms) = array_pad(explode('.', (string)round((float)$timestamp, 4)), 2, null);
 			// if negative remember
 			$negative = false;
 			if ((int)$timestamp < 0) {
@@ -65,11 +65,14 @@ class DateTime
 			if ($ms !== null) {
 				// if we have ms and it has leading zeros, remove them, but only if it is nut just 0
 				$ms = preg_replace("/^0+(\d+)$/", '${1}', $ms);
+				if (!is_string($ms) || empty($ms)) {
+					$ms = '0';
+				}
 				// add ms if there
 				if ($show_micro) {
-					$time_string .= ' ' . (!$ms ? 0 : $ms) . 'ms';
+					$time_string .= ' ' . $ms . 'ms';
 				} elseif (!$time_string) {
-					$time_string .= (!$ms ? 0 : $ms) . 'ms';
+					$time_string .= $ms . 'ms';
 				}
 			}
 			if ($negative) {
@@ -78,7 +81,7 @@ class DateTime
 		} else {
 			$time_string = $timestamp;
 		}
-		return $time_string;
+		return (string)$time_string;
 	}
 
 	/**
@@ -90,7 +93,8 @@ class DateTime
 	public static function stringToTime($timestring)
 	{
 		$timestamp = 0;
-		if (preg_match("/(d|h|m|s|ms)/", $timestring)) {
+		if (preg_match("/(d|h|m|s|ms)/", (string)$timestring)) {
+			$timestring = (string)$timestring;
 			// pos for preg match read + multiply factor
 			$timegroups = [2 => 86400, 4 => 3600, 6 => 60, 8 => 1];
 			$matches = [];
@@ -131,7 +135,11 @@ class DateTime
 		if (!$date) {
 			return false;
 		}
-		list ($year, $month, $day) = array_pad(preg_split("/[\/-]/", $date), 3, null);
+		list ($year, $month, $day) = array_pad(
+			preg_split("/[\/-]/", $date) ?: [],
+			3,
+			null
+		);
 		if (!$year || !$month || !$day) {
 			return false;
 		}
@@ -146,12 +154,16 @@ class DateTime
 	 * @param  string $datetime date (YYYY-MM-DD) + time (HH:MM:SS), SS can be dropped
 	 * @return bool             true if valid date, false if date not valid
 	 */
-	public static function checkDateTime($datetime): bool
+	public static function checkDateTime(string $datetime): bool
 	{
 		if (!$datetime) {
 			return false;
 		}
-		list ($year, $month, $day, $hour, $min, $sec) = array_pad(preg_split("/[\/\- :]/", $datetime), 6, null);
+		list ($year, $month, $day, $hour, $min, $sec) = array_pad(
+			preg_split("/[\/\- :]/", $datetime) ?: [],
+			6,
+			null
+		);
 		if (!$year || !$month || !$day) {
 			return false;
 		}
@@ -190,8 +202,16 @@ class DateTime
 		}
 
 		// splits the data up with / or -
-		list ($start_year, $start_month, $start_day) = array_pad(preg_split('/[\/-]/', $start_date), 3, null);
-		list ($end_year, $end_month, $end_day) = array_pad(preg_split('/[\/-]/', $end_date), 3, null);
+		list ($start_year, $start_month, $start_day) = array_pad(
+			preg_split('/[\/-]/', $start_date) ?: [],
+			3,
+			null
+		);
+		list ($end_year, $end_month, $end_day) = array_pad(
+			preg_split('/[\/-]/', $end_date) ?: [],
+			3,
+			null
+		);
 		// check that month & day are two digits and then combine
 		foreach (['start', 'end'] as $prefix) {
 			foreach (['month', 'day'] as $date_part) {
@@ -256,7 +276,7 @@ class DateTime
 	 * @param  string $start_date   valid start date (y/m/d)
 	 * @param  string $end_date     valid end date (y/m/d)
 	 * @param  bool   $return_named return array type, false (default), true for named
-	 * @return array                0/overall, 1/weekday, 2/weekend
+	 * @return array         0/overall, 1/weekday, 2/weekend
 	 */
 	public static function calcDaysInterval($start_date, $end_date, bool $return_named = false): array
 	{
diff --git a/www/lib/CoreLibs/Convert/Byte.php b/www/lib/CoreLibs/Convert/Byte.php
index 11aa6ebf..a80620f8 100644
--- a/www/lib/CoreLibs/Convert/Byte.php
+++ b/www/lib/CoreLibs/Convert/Byte.php
@@ -125,7 +125,7 @@ class Byte
 		// detects up to exo bytes
 		preg_match(
 			"/([\d.,]*)\s?(eib|pib|tib|gib|mib|kib|eb|pb|tb|gb|mb|kb|e|p|t|g|m|k|b)$/i",
-			strtolower($number),
+			strtolower((string)$number),
 			$matches
 		);
 		if (isset($matches[1]) && isset($matches[2])) {
@@ -136,7 +136,7 @@ class Byte
 			// convert any mb/gb/etc to single m/b
 			$unit = preg_replace('/[^bkmgtpezy]/i', '', $matches[2]);
 			if ($unit) {
-				$number = $number * pow($si ? 1000 : 1024, stripos($valid_units_, $unit[0]));
+				$number = $number * pow($si ? 1000 : 1024, stripos($valid_units_, $unit[0]) ?: 0);
 			}
 			// convert to INT to avoid +E output
 			$number = (int)round($number);
diff --git a/www/lib/CoreLibs/Convert/Colors.php b/www/lib/CoreLibs/Convert/Colors.php
index dab60651..bcc5d801 100644
--- a/www/lib/CoreLibs/Convert/Colors.php
+++ b/www/lib/CoreLibs/Convert/Colors.php
@@ -18,14 +18,18 @@ class Colors
 {
 	/**
 	 * converts a hex RGB color to the int numbers
-	 * @param  string            $hexStr         RGB hexstring
-	 * @param  bool              $returnAsString flag to return as string
-	 * @param  string            $seperator      string seperator: default: ","
-	 * @return string|array|bool                 false on error or array with RGB or a string with the seperator
+	 * @param  string $hexStr         RGB hexstring
+	 * @param  bool   $returnAsString flag to return as string
+	 * @param  string $seperator      string seperator: default: ","
+	 * @return string|array|bool false on error or array with RGB
+	 *                                             or a string with the seperator
 	 */
 	public static function hex2rgb(string $hexStr, bool $returnAsString = false, string $seperator = ',')
 	{
 		$hexStr = preg_replace("/[^0-9A-Fa-f]/", '', $hexStr); // Gets a proper hex string
+		if (!is_string($hexStr)) {
+			return false;
+		}
 		$rgbArray = [];
 		if (strlen($hexStr) == 6) {
 			// If a proper hex code, convert using bitwise operation. No overhead... faster
@@ -76,10 +80,10 @@ class Colors
 	 * converts RGB to HSB/V values
 	 * returns:
 	 * array with hue (0-360), sat (0-100%), brightness/value (0-100%)
-	 * @param  int   $red   red 0-255
-	 * @param  int   $green green 0-255
-	 * @param  int   $blue  blue 0-255
-	 * @return array         Hue, Sat, Brightness/Value
+	 * @param  int   $red       red 0-255
+	 * @param  int   $green     green 0-255
+	 * @param  int   $blue      blue 0-255
+	 * @return array Hue, Sat, Brightness/Value
 	 */
 	public static function rgb2hsb(int $red, int $green, int $blue): array
 	{
@@ -119,10 +123,10 @@ class Colors
 
 	/**
 	 * converts HSB/V to RGB values RGB is full INT
-	 * @param  int   $H hue 0-360
-	 * @param  int   $S saturation 0-100 (int)
-	 * @param  int   $V brightness/value 0-100 (int)
-	 * @return array    0 red/1 green/2 blue array as 0-255
+	 * @param  int        $H hue 0-360
+	 * @param  int        $S saturation 0-100 (int)
+	 * @param  int        $V brightness/value 0-100 (int)
+	 * @return array    0 red/1 green/2 blue array as 0-255
 	 */
 	public static function hsb2rgb(int $H, int $S, int $V): array
 	{
@@ -199,10 +203,10 @@ class Colors
 	 * converts a RGB (0-255) to HSL
 	 * return:
 	 * array with hue (0-360), saturation (0-100%) and luminance (0-100%)
-	 * @param  int   $red   red 0-255
-	 * @param  int   $green green 0-255
-	 * @param  int   $blue  blue 0-255
-	 * @return array         hue/sat/luminance
+	 * @param  int          $red   red 0-255
+	 * @param  int          $green green 0-255
+	 * @param  int          $blue  blue 0-255
+	 * @return array        hue/sat/luminance
 	 */
 	public static function rgb2hsl(int $red, int $green, int $blue): array
 	{
@@ -253,7 +257,7 @@ class Colors
 	 * @param  int   $hue hue: 0-360 (degrees)
 	 * @param  float $sat saturation: 0-100
 	 * @param  float $lum luminance: 0-100
-	 * @return array      red/blue/green 0-255 each
+	 * @return array red/blue/green 0-255 each
 	 */
 	public static function hsl2rgb(int $hue, float $sat, float $lum): array
 	{
diff --git a/www/lib/CoreLibs/Convert/Html.php b/www/lib/CoreLibs/Convert/Html.php
index 96ba88bd..39b15724 100644
--- a/www/lib/CoreLibs/Convert/Html.php
+++ b/www/lib/CoreLibs/Convert/Html.php
@@ -39,10 +39,10 @@ class Html
 	 * returns 'checked' or 'selected' if okay
 	 * $needle is a var, $haystack an array or a string
 	 * **** THE RETURN: VALUE WILL CHANGE TO A DEFAULT NULL IF NOT FOUND ****
-	 * @param  array|string $haystack (search in) haystack can be an array or a string
-	 * @param  string       $needle   needle (search for)
-	 * @param  int          $type     type: 0: returns selected, 1, returns checked
-	 * @return ?string                returns checked or selected, else returns null
+	 * @param  array|string $haystack (search in) haystack can be an array or a string
+	 * @param  string              $needle   needle (search for)
+	 * @param  int                 $type     type: 0: returns selected, 1, returns checked
+	 * @return ?string                       returns checked or selected, else returns null
 	 */
 	public static function checked($haystack, $needle, int $type = 0): ?string
 	{
diff --git a/www/lib/CoreLibs/Convert/MimeAppName.php b/www/lib/CoreLibs/Convert/MimeAppName.php
index 0e5a4df7..2368d759 100644
--- a/www/lib/CoreLibs/Convert/MimeAppName.php
+++ b/www/lib/CoreLibs/Convert/MimeAppName.php
@@ -11,6 +11,7 @@ namespace CoreLibs\Convert;
 
 class MimeAppName
 {
+	/** @var array */
 	private static $mime_apps = [];
 
 	/**
diff --git a/www/lib/CoreLibs/Create/Hash.php b/www/lib/CoreLibs/Create/Hash.php
index 10ced089..9b6d81ed 100644
--- a/www/lib/CoreLibs/Create/Hash.php
+++ b/www/lib/CoreLibs/Create/Hash.php
@@ -12,6 +12,9 @@ class Hash
 {
 	/**
 	 * checks php version and if >=5.2.7 it will flip the string
+	 * can return empty string if none of string sets work
+	 * hash returns false
+	 * preg_replace fails for older php version
 	 * @param  string $string string to crc
 	 * @return string         crc32b hash (old type)
 	 */
@@ -24,6 +27,9 @@ class Hash
 			// flip it back to old (two char groups)
 			$string = preg_replace("/^([a-z0-9]{2})([a-z0-9]{2})([a-z0-9]{2})([a-z0-9]{2})$/", "$4$3$2$1", $string);
 		}
+		if (!is_string($string)) {
+			$string = '';
+		}
 		return $string;
 	}
 
diff --git a/www/lib/CoreLibs/Create/RandomKey.php b/www/lib/CoreLibs/Create/RandomKey.php
index 759a5ec0..80c476c7 100644
--- a/www/lib/CoreLibs/Create/RandomKey.php
+++ b/www/lib/CoreLibs/Create/RandomKey.php
@@ -11,9 +11,13 @@ namespace CoreLibs\Create;
 class RandomKey
 {
 	// key generation
+	/** @var array */
 	private static $key_range = [];
+	/** @var int */
 	private static $one_key_length;
+	/** @var int */
 	private static $key_length = 4; // default key length
+	/** @var int */
 	private static $max_key_length = 256; // max allowed length
 
 	/**
diff --git a/www/lib/CoreLibs/DB/Extended/ArrayIO.php b/www/lib/CoreLibs/DB/Extended/ArrayIO.php
index 10c2fffe..0dc17f63 100644
--- a/www/lib/CoreLibs/DB/Extended/ArrayIO.php
+++ b/www/lib/CoreLibs/DB/Extended/ArrayIO.php
@@ -38,17 +38,21 @@ namespace CoreLibs\DB\Extended;
 class ArrayIO extends \CoreLibs\DB\IO
 {
 	// main calss variables
+	/** @var array */
 	public $table_array; // the array from the table to work on
+	/** @var string */
 	public $table_name; // the table_name
+	/** @var string */
 	public $pk_name; // the primary key from this table
+	/** @var int|string|null */
 	public $pk_id; // the PK id
 
 	/**
 	 * constructor for the array io class, set the
 	 * primary key name automatically (from array)
-	 * @param array  $db_config   db connection config
-	 * @param array  $table_array table array config
-	 * @param string $table_name  table name string
+	 * @param array $db_config   db connection config
+	 * @param array $table_array table array config
+	 * @param string       $table_name  table name string
 	 */
 	public function __construct(array $db_config, array $table_array, string $table_name)
 	{
@@ -174,9 +178,9 @@ class ArrayIO extends \CoreLibs\DB\IO
 
 	/**
 	 * deletes one dataset
-	 * @param  array  $table_array optional override for table array set
-	 *                             set this as new table array too
-	 * @return array               returns the table array that was deleted
+	 * @param  array $table_array optional override for table array set
+	 *                                   set this as new table array too
+	 * @return array              returns the table array that was deleted
 	 */
 	public function dbDelete($table_array = [])
 	{
@@ -234,9 +238,9 @@ class ArrayIO extends \CoreLibs\DB\IO
 
 	/**
 	 * reads one row into the array
-	 * @param  boolean $edit        on true convert data, else as is
-	 * @param  array   $table_array optional table array, overwrites internal set array
-	 * @return array                set table array with values
+	 * @param  boolean      $edit        on true convert data, else as is
+	 * @param  array $table_array optional table array, overwrites internal set array
+	 * @return array              set table array with values
 	 */
 	public function dbRead($edit = false, $table_array = [])
 	{
@@ -276,7 +280,7 @@ class ArrayIO extends \CoreLibs\DB\IO
 
 		// if query was executed okay, else set error
 		if ($this->dbExec($q)) {
-			if ($res = $this->dbFetchArray()) {
+			if (is_array($res = $this->dbFetchArray())) {
 				reset($this->table_array);
 				foreach ($this->table_array as $column => $data_array) {
 					// wenn "edit" dann gib daten wie in DB zurück, ansonten aufbereiten fr ausgabe
@@ -309,9 +313,9 @@ class ArrayIO extends \CoreLibs\DB\IO
 
 	/**
 	 * writes one set into DB or updates one set (if PK exists)
-	 * @param  boolean $addslashes  old convert entities and set set escape
-	 * @param  array   $table_array optional table array, overwrites internal one
-	 * @return array                table array or null
+	 * @param  boolean      $addslashes  old convert entities and set set escape
+	 * @param  array $table_array optional table array, overwrites internal one
+	 * @return array              table array or null
 	 */
 	public function dbWrite($addslashes = false, $table_array = [])
 	{
@@ -499,11 +503,12 @@ class ArrayIO extends \CoreLibs\DB\IO
 		if (!$this->table_array[$this->pk_name]['value']) {
 			// max id, falls INSERT
 			$q = 'SELECT MAX(' . $this->pk_name . ') + 1 AS pk_id FROM ' . $this->table_name;
-			$res = $this->dbReturnRow($q);
-			if (!isset($res['pk_id'])) {
-				$res['pk_id'] = 1;
+			if (is_array($res = $this->dbReturnRow($q))) {
+				$pk_id = $res['pkd_id'];
+			} else {
+				$pk_id = 1;
 			}
-			$this->table_array[$this->pk_name]['value'] = $res['pk_id'];
+			$this->table_array[$this->pk_name]['value'] = $pk_id;
 		}
 
 		if (!$insert) {
@@ -533,8 +538,13 @@ class ArrayIO extends \CoreLibs\DB\IO
 		}
 		// set primary key
 		if ($insert) {
-			$this->table_array[$this->pk_name]['value'] = $this->insert_id;
-			$this->pk_id = $this->insert_id;
+			// FIXME: this has to be fixes by fixing DB::IO clas
+			$insert_id = $this->dbGetReturning();
+			if (is_bool($insert_id) || is_array($insert_id)) {
+				$insert_id = 0;
+			}
+			$this->table_array[$this->pk_name]['value'] = $insert_id;
+			$this->pk_id = $insert_id;
 		}
 		// return the table if needed
 		return $this->table_array;
diff --git a/www/lib/CoreLibs/DB/IO.php b/www/lib/CoreLibs/DB/IO.php
index ebfa21eb..875463ad 100644
--- a/www/lib/CoreLibs/DB/IO.php
+++ b/www/lib/CoreLibs/DB/IO.php
@@ -257,66 +257,105 @@ class IO extends \CoreLibs\Basic
 	// recommend to set private/protected and only allow setting via method
 	// can bet set from outside
 	// encoding to
+	/** @var string */
 	public $to_encoding = '';
+	/** @var string */
 	public $query; // the query string at the moment
 	// only inside
 	// basic vars
-	private $dbh; // the dbh handler
-	public $db_debug; // DB_DEBUG ... (if set prints out debug msgs)
+	/** @var resource|bool|int|null */
+	private $dbh; // the dbh handler, if disconnected by command is null, bool:false/int:-1 on error,
+	/** @var int|bool */
+	public $db_debug; // DB_DEBUG ... (if set prints out debug msgs) [should be bool only]
+	/** @var string */
 	private $db_name; // the DB connected to
+	/** @var string */
 	private $db_user; // the username used
+	/** @var string */
 	private $db_pwd; // the password used
+	/** @var string */
 	private $db_host; // the hostname
+	/** @var int */
 	private $db_port; // default db port
+	/** @var string */
 	private $db_schema; // optional DB schema, if not set uses public
+	/** @var string */
 	private $db_encoding; // optional auto encoding convert, not used if not set
+	/** @var string */
 	private $db_type; // type of db (mysql,postgres,...)
+	/** @var string */
 	private $db_ssl; // ssl flag (for postgres only), disable, allow, prefer, require
 	// FOR BELOW: (This should be private and only readable through some method)
 	// cursor array for cached readings
+	/** @var array */
 	public $cursor_ext; // hash of hashes
 	// per query vars
+	/** @var resource */
 	public $cursor; // actual cursor (DBH)
+	/** @var int */
 	public $num_rows; // how many rows have been found
+	/** @var int */
 	public $num_fields; // how many fields has the query
+	/** @var array */
 	public $field_names = []; // array with the field names of the current query
+	// FIXME: insert_id and insert_id_ext should not be such a mixed mess
+	/** @var string|int|bool|array */
 	public $insert_id; // last inserted ID
+	/** @var string|int|bool|array */
 	public $insert_id_ext; // extended insert ID (for data outside only primary key)
+	/** @var array */
 	public $insert_id_arr; // always return as array, even if only one
+	/** @var string */
 	private $temp_sql;
 	// other vars
+	/** @var string */
 	private $nbsp = ''; // used by print_array recursion function
 	// error & warning id
+	/** @var int */
 	protected $error_id;
+	/** @var int */
 	private $had_error = 0;
+	/** @var int */
 	private $warning_id;
+	/** @var int */
 	private $had_warning;
 	// error thrown on class init if we cannot connect to db
+	/** @var bool */
 	protected $db_init_error = false;
 	// sub include with the database functions
+	/** @var \CoreLibs\DB\SQL\PgSQL */
 	private $db_functions;
 
 	// endless loop protection
+	/** @var int */
 	private $MAX_QUERY_CALL;
+	/** @var int */
 	private $DEFAULT_MAX_QUERY_CALL = 20; // default
+	/** @var array */
 	private $query_called = [];
 	// error string
+	/** @var array */
 	protected $error_string = [];
 	// prepared list
+	/** @var array */
 	public $prepare_cursor = [];
 	// primary key per table list
 	// format is 'table' => 'pk_name'
+	/** @var array */
 	public $pk_name_table = [];
 	// internal primary key name, for cross calls in async
+	/** @var string */
 	public $pk_name;
 	// if we use RETURNING in the INSERT call
+	/** @var bool */
 	private $returning_id = false;
 	// if a sync is running holds the md5 key of the query
+	/** @var string */
 	private $async_running;
 
 	/**
 	 * main DB concstructor with auto connection to DB and failure set on failed connection
-	 * @param array $db_config DB configuration array
+	 * @param array $db_config DB configuration array
 	 */
 	public function __construct(array $db_config)
 	{
@@ -525,8 +564,8 @@ class IO extends \CoreLibs\Basic
 	 * internal funktion that creates the array
 	 * NOTE:
 	 * used in db_dump_data only
-	 * @param  array  $array array to print
-	 * @return string        string with printed and formated array
+	 * @param  array $array array to print
+	 * @return string              string with printed and formated array
 	 */
 	private function __printArray(array $array): string
 	{
@@ -577,14 +616,14 @@ class IO extends \CoreLibs\Basic
 	 * needed to make public so it can be called from DB.Array.IO too
 	 * @param  resource|bool $cursor current cursor for pg_result_error, mysql uses dbh,
 	 *                               pg_last_error too, but pg_result_error is more accurate
-	 * @param  string    $msg        optional message
+	 * @param  string         $msg   optional message
 	 * @return void                  has no return
 	 */
 	public function __dbError($cursor = false, string $msg = ''): void
 	{
 		$pg_error_string = '';
 		$where_called = (string)\CoreLibs\Debug\Support::getCallerMethod();
-		if ($cursor) {
+		if (is_resource($cursor)) {
 			$pg_error_string = $this->db_functions->__dbPrintError($cursor);
 		}
 		if (!$cursor && method_exists($this->db_functions, '__dbPrintError')) {
@@ -625,11 +664,14 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * if there is the 'to_encoding' var set, and the field is in the wrong encoding converts it to the target
-	 * @param  array|bool|null $row array from fetch_row
-	 * @return array|bool|null            convert fetch_row array, or false
+	 * @param  array|bool|null $row array from fetch_row
+	 * @return array|bool           convert fetch_row array, or false
 	 */
 	private function __dbConvertEncoding($row)
 	{
+		if ($row === null) {
+			return false;
+		}
 		// only do if array, else pass through row (can be false)
 		if (
 			!is_array($row) || empty($this->to_encoding) || empty($this->db_encoding)
@@ -640,7 +682,11 @@ class IO extends \CoreLibs\Basic
 		foreach ($row as $key => $value) {
 			$from_encoding = mb_detect_encoding($value);
 			// convert only if encoding doesn't match and source is not pure ASCII
-			if ($from_encoding != $this->to_encoding && $from_encoding != 'ASCII') {
+			if (
+				$from_encoding !== false &&
+				$from_encoding != $this->to_encoding &&
+				$from_encoding != 'ASCII'
+			) {
 				$row[$key] = mb_convert_encoding($value, $this->to_encoding, $from_encoding);
 			}
 		}
@@ -649,9 +695,9 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * for debug purpose replaces $1, $2, etc with actual data
-	 * @param  string $stm_name prepared statement name
-	 * @param  array  $data     the data array
-	 * @return string           string of query with data inside
+	 * @param  string       $stm_name prepared statement name
+	 * @param  array $data     the data array
+	 * @return string                 string of query with data inside
 	 */
 	private function __dbDebugPrepare(string $stm_name, array $data = []): string
 	{
@@ -667,8 +713,8 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * extracts schema and table from the query, if no schema returns just empty string
-	 * @param  string $query insert/select/update/delete query
-	 * @return array         array with schema and table
+	 * @param  string       $query insert/select/update/delete query
+	 * @return array        array with schema and table
 	 */
 	private function __dbReturnTable(string $query): array
 	{
@@ -737,7 +783,9 @@ class IO extends \CoreLibs\Basic
 				}
 				if (!preg_match("/ returning /i", $this->query) && $this->pk_name && $this->pk_name != 'NULL') {
 					// check if this query has a ; at the end and remove it
-					$this->query = preg_replace("/(;\s*)$/", '', $this->query);
+					$__query = preg_replace("/(;\s*)$/", '', $this->query);
+					// must be query, if preg replace failed, use query as before
+					$this->query = !is_string($__query) ? $this->query : $query;
 					$this->query .= " RETURNING " . $this->pk_name;
 					$this->returning_id = true;
 				} elseif (preg_match("/ returning (.*)/i", $this->query, $matches)) {
@@ -794,7 +842,7 @@ class IO extends \CoreLibs\Basic
 	{
 		// if FALSE returned, set error stuff
 		// if either the cursor is false
-		if (!$this->cursor || $this->db_functions->__dbLastErrorQuery()) {
+		if (!is_resource($this->cursor) || $this->db_functions->__dbLastErrorQuery()) {
 			// printout Query if debug is turned on
 			if ($this->db_debug) {
 				$this->__dbDebug('db', $this->query, 'dbExec', 'Q[nc]');
@@ -859,17 +907,24 @@ class IO extends \CoreLibs\Basic
 							// if only ['foo_id'] and it is the PK then the
 							// PK is directly written to the insert_id
 							if (
+								// FIXME: everything should be an array
+								/** @phpstan-ignore-next-line */
 								count($this->insert_id[0]) > 1 ||
+								/** @phpstan-ignore-next-line */
 								!array_key_exists($this->pk_name, $this->insert_id[0])
 							) {
 								$this->insert_id_ext = $this->insert_id[0];
+								/** @phpstan-ignore-next-line */
 								if (isset($this->insert_id[0][$this->pk_name])) {
 									$this->insert_id = $this->insert_id[0][$this->pk_name];
 								}
 							} elseif (isset($this->insert_id[0][$this->pk_name])) {
 								$this->insert_id = $this->insert_id[0][$this->pk_name];
 							}
-						} elseif (count($this->insert_id) == 0) {
+						} elseif (
+							!is_array($this->insert_id) ||
+							count($this->insert_id) == 0
+						) {
 							// if we have non -> error
 							// failed to get insert id
 							$this->insert_id = '';
@@ -922,7 +977,7 @@ class IO extends \CoreLibs\Basic
 	 * with the optional parameter fix sets debug
 	 * returns current set stats
 	 * @param  bool|null $debug Flag to turn debug on off
-	 * @return bool True for debug is on, False for off
+	 * @return bool             True for debug is on, False for off
 	 */
 	public function dbToggleDebug(?bool $debug = null)
 	{
@@ -1045,7 +1100,7 @@ class IO extends \CoreLibs\Basic
 			return false;
 		}
 		$q = "SET search_path TO '" . $this->dbEscapeString($db_schema) . "'";
-		return $this->dbExec($q);
+		return $this->dbExec($q) ? true : false;
 	}
 
 	/**
@@ -1059,7 +1114,8 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * sets the client encoding in the postgres database
-	 * @param  string $db_encoding valid encoding name, so the the data gets converted to this encoding
+	 * @param  string $db_encoding valid encoding name,
+	 *                             so the the data gets converted to this encoding
 	 * @return bool                false, or true of db exec encoding set
 	 */
 	public function dbSetEncoding(string $db_encoding = ''): bool
@@ -1071,7 +1127,7 @@ class IO extends \CoreLibs\Basic
 			return false;
 		}
 		$q = "SET client_encoding TO '" . $this->dbEscapeString($db_encoding) . "'";
-		return $this->dbExec($q);
+		return $this->dbExec($q) ? true : false;
 	}
 
 	/**
@@ -1080,7 +1136,11 @@ class IO extends \CoreLibs\Basic
 	 */
 	public function dbGetEncoding(): string
 	{
-		return $this->dbReturnRow('SHOW client_encoding')['client_encoding'];
+		$client_encoding = $this->dbReturnRow('SHOW client_encoding');
+		if (!is_array($client_encoding)) {
+			return '';
+		}
+		return $client_encoding['client_encoding'] ?? '';
 	}
 
 	/**
@@ -1159,7 +1219,7 @@ class IO extends \CoreLibs\Basic
 	{
 		// set start array
 		if ($query) {
-			$array = $this->cursor_ext[md5($query)];
+			$array = $this->cursor_ext[md5($query)] ?? [];
 		} else {
 			$array = $this->cursor_ext;
 		}
@@ -1185,15 +1245,15 @@ class IO extends \CoreLibs\Basic
 	 *   (wheres 1 reads cache AND destroys at end of read)
 	 * - if set to 3, after EACH row, the data will be reset,
 	 *   no caching is done except for basic (count, etc)
-	 * @param  string     $query Query string
-	 * @param  int        $reset reset status:
-	 *                    1: read cache, clean at the end
-	 *                    2: read new, clean at end
-	 *                    3: never cache
+	 * @param  string     $query      Query string
+	 * @param  int        $reset      reset status:
+	 *                                1: read cache, clean at the end
+	 *                                2: read new, clean at end
+	 *                                3: never cache
 	 * @param  bool       $assoc_only true to only returned the named and not
-	 *                    index position ones
-	 * @return array|bool             return array data or false on error/end
-	 * @suppress PhanTypeMismatchDimFetch
+	 *                    index       position ones
+	 * @return array|bool      return array data or false on error/end
+	 * @#suppress PhanTypeMismatchDimFetch
 	 */
 	public function dbReturn(string $query, int $reset = 0, bool $assoc_only = false)
 	{
@@ -1213,7 +1273,8 @@ class IO extends \CoreLibs\Basic
 				'firstcall' => 0,
 				'num_rows' => 0,
 				'num_fields' => 0,
-				'read_rows' => 0
+				'read_rows' => 0,
+				'data' => []
 			];
 		}
 		// set the query
@@ -1324,25 +1385,33 @@ class IO extends \CoreLibs\Basic
 					// unset return value ...
 					$return = [];
 					for ($i = 0; $i < $this->cursor_ext[$md5]['num_fields']; $i++) {
+						// FIXME: find out why phan throws all those array errors
 						// create mixed return array
 						if (
 							$assoc_only === false &&
 							isset($this->cursor_ext[$md5]['data'][$this->cursor_ext[$md5]['pos']][$i])
 						) {
+							/** @phan-suppress-next-line PhanTypeArraySuspiciousNullable */
 							$return[$i] = $this->cursor_ext[$md5]['data'][$this->cursor_ext[$md5]['pos']][$i];
 						}
 						// named part
-						if (isset($this->cursor_ext[$md5]['data'][$this->cursor_ext[$md5]['pos']][$i])) {
-							$return[$this->cursor_ext[$md5]['field_names'][$i]] =
-								$this->cursor_ext[$md5]['data']
-									[$this->cursor_ext[$md5]['pos']][$i];
-						} else {
-							// throws PhanTypeMismatchDimFetch error, but in this
-							// case we know we will access only named array parts
-							// @suppress PhanTypeMismatchDimFetch
-							$return[$this->cursor_ext[$md5]['field_names'][$i]] =
-								$this->cursor_ext[$md5]['data'][$this->cursor_ext[$md5]
-									['pos']][$this->cursor_ext[$md5]['field_names'][$i]];
+						if (!empty($this->cursor_ext[$md5]['field_names'][$i])) {
+							if (isset($this->cursor_ext[$md5]['data'][$this->cursor_ext[$md5]['pos']][$i])) {
+								/** @phan-suppress-next-line PhanTypeArraySuspiciousNullable */
+								$return[$this->cursor_ext[$md5]['field_names'][$i]] =
+									/** @phan-suppress-next-line PhanTypeArraySuspiciousNullable */
+									$this->cursor_ext[$md5]['data']
+										[$this->cursor_ext[$md5]['pos']][$i];
+							} else {
+								// throws PhanTypeMismatchDimFetch error, but in this
+								// case we know we will access only named array parts
+								/** @phan-suppress-next-line PhanTypeArraySuspiciousNullable */
+								$return[$this->cursor_ext[$md5]['field_names'][$i]] =
+									/** @phan-suppress-next-line PhanTypeMismatchDimFetch,PhanTypeArraySuspiciousNullable */
+									$this->cursor_ext[$md5]['data'][$this->cursor_ext[$md5]
+										/** @phan-suppress-next-line PhanTypeArraySuspiciousNullable */
+										['pos']][$this->cursor_ext[$md5]['field_names'][$i]];
+							}
 						}
 					}
 					$this->cursor_ext[$md5]['pos'] ++;
@@ -1404,8 +1473,10 @@ class IO extends \CoreLibs\Basic
 	 * additional read from the database for the PK NAME
 	 * @param  string         $query   the query, if not given, the query class var will be used
 	 *                                 (if this was not set, method will quit with a 0 (failure)
-	 * @param  string         $pk_name optional primary key name, for insert id return if the pk name is very different
-	 *                                 if pk name is table name and _id, pk_name is not needed to be set
+	 * @param  string         $pk_name optional primary key name, for insert id
+	 *                                 return if the pk name is very different
+	 *                                 if pk name is table name and _id, pk_name
+	 *                                 is not needed to be set
 	 *                                 if NULL is given here, no RETURNING will be auto added
 	 * @return resource|false          cursor for this query or false on error
 	 */
@@ -1417,7 +1488,11 @@ class IO extends \CoreLibs\Basic
 			return false;
 		}
 		// ** actual db exec call
-		$this->cursor = $this->db_functions->__dbQuery($this->query);
+		$cursor = $this->db_functions->__dbQuery($this->query);
+		if (!is_resource($cursor)) {
+			return false;
+		}
+		$this->cursor = $cursor;
 		// if FALSE returned, set error stuff
 		// run the post exec processing
 		if (!$this->__dbPostExec()) {
@@ -1429,11 +1504,13 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * executres the query async so other methods can be run during this
-	 * for INSERT INTO queries it is highly recommended to set the pk_name to avoid an additional
+	 * for INSERT INTO queries it is highly recommended to set the pk_name
+	 * to avoid an additional
 	 * read from the database for the PK NAME
 	 * NEEDS : dbCheckAsync
 	 * @param  string $query   query to run
-	 * @param  string $pk_name optional primary key name, only used with insert for returning call
+	 * @param  string $pk_name optional primary key name, only used with
+	 *                         insert for returning call
 	 * @return bool            true if async query was sent ok, false if error happened
 	 */
 	public function dbExecAsync(string $query, string $pk_name = ''): bool
@@ -1450,7 +1527,7 @@ class IO extends \CoreLibs\Basic
 			$this->__dbError();
 			return false;
 		} else {
-			$this->async_running = $md5;
+			$this->async_running = (string)$md5;
 			// all ok, we return true (as would be from the original send query function)
 			return true;
 		}
@@ -1469,8 +1546,12 @@ class IO extends \CoreLibs\Basic
 			if ($this->db_functions->__dbConnectionBusy()) {
 				return true;
 			} else {
+				$cursor = $this->db_functions->__dbGetResult();
+				if (!is_resource($cursor)) {
+					return false;
+				}
 				// get the result/or error
-				$this->cursor = $this->db_functions->__dbGetResult();
+				$this->cursor = $cursor;
 				$this->async_running = '';
 				// run the post exec processing
 				if (!$this->__dbPostExec()) {
@@ -1494,18 +1575,20 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * executes a cursor and returns the data, if no more data 0 will be returned
-	 * @param  resource|false $cursor     the cursor from db_exec or pg_query/pg_exec/mysql_query
-	 *                                    if not set will use internal cursor, if not found, stops with 0 (error)
-	 * @param  bool           $assoc_only false is default, if true only assoc rows
-	 * @return array|bool                 row array or false on error
+	 * @param  resource|false   $cursor      the cursor from db_exec or
+	 *                                       pg_query/pg_exec/mysql_query
+	 *                                       if not set will use internal cursor,
+	 *                                       if not found, stops with 0 (error)
+	 * @param  bool              $assoc_only false is default, if true only assoc rows
+	 * @return array|bool             row array or false on error
 	 */
 	public function dbFetchArray($cursor = false, bool $assoc_only = false)
 	{
 		// return false if no query or cursor set ...
-		if (!$cursor) {
+		if (!is_resource($cursor)) {
 			$cursor = $this->cursor;
 		}
-		if (!$cursor) {
+		if (!is_resource($cursor)) {
 			$this->error_id = 12;
 			$this->__dbError();
 			return false;
@@ -1522,7 +1605,7 @@ class IO extends \CoreLibs\Basic
 	 * returns the FIRST row of the given query
 	 * @param  string     $query      the query to be executed
 	 * @param  bool       $assoc_only if true, only return assoc entry, else both (pgsql)
-	 * @return array|bool             row array or false on error
+	 * @return array|bool      row array or false on error
 	 */
 	public function dbReturnRow(string $query, bool $assoc_only = false)
 	{
@@ -1546,7 +1629,7 @@ class IO extends \CoreLibs\Basic
 	 * createds an array of hashes of the query (all data)
 	 * @param  string     $query      the query to be executed
 	 * @param  bool       $assoc_only if true, only name ref are returned
-	 * @return array|bool             array of hashes (row -> fields), false on error
+	 * @return array|bool      array of hashes (row -> fields), false on error
 	 */
 	public function dbReturnArray(string $query, bool $assoc_only = false)
 	{
@@ -1563,10 +1646,10 @@ class IO extends \CoreLibs\Basic
 		}
 		$cursor = $this->dbExec($query);
 		$rows = [];
-		while ($res = $this->dbFetchArray($cursor, $assoc_only)) {
+		while (is_array($res = $this->dbFetchArray($cursor, $assoc_only))) {
 			$data = [];
 			for ($i = 0; $i < $this->num_fields; $i++) {
-				$data[$this->field_names[$i]] = $res[$this->field_names[$i]];
+				$data[$this->field_names[$i]] = $res[$this->field_names[$i]] ?? null;
 			}
 			$rows[] = $data;
 		}
@@ -1609,7 +1692,7 @@ class IO extends \CoreLibs\Basic
 	 * returns an array of the table with columns and values. FALSE on no table found
 	 * @param  string     $table  table name
 	 * @param  string     $schema optional schema name
-	 * @return array|bool         array of table data, false on error (table not found)
+	 * @return array|bool         array of table data, false on error (table not found)
 	 */
 	public function dbShowTableMetaData(string $table, string $schema = '')
 	{
@@ -1721,9 +1804,9 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * runs a prepare query
-	 * @param  string        $stm_name statement name for the query to run
-	 * @param  array         $data     data to run for this query, empty array for none
-	 * @return ?mixed                  false on error, or result on OK
+	 * @param  string       $stm_name statement name for the query to run
+	 * @param  array $data     data to run for this query, empty array for none
+	 * @return ?mixed                 false on error, or result on OK
 	 */
 	public function dbExecute(string $stm_name, array $data = [])
 	{
@@ -1764,7 +1847,7 @@ class IO extends \CoreLibs\Basic
 			$this->__dbDebug('db', $this->__dbDebugPrepare($stm_name, $data), 'dbExecPrep', 'Q');
 		}
 		$result = $this->db_functions->__dbExecute($stm_name, $data);
-		if (!$result) {
+		if (!is_resource($result)) {
 			$this->log->debug('ExecuteData', 'ERROR in STM[' . $stm_name . '|'
 				. $this->prepare_cursor[$stm_name]['result'] . ']: '
 				. $this->log->prAr($data));
@@ -1816,10 +1899,14 @@ class IO extends \CoreLibs\Basic
 					// if only ['foo_id'] and it is the PK then the PK is directly
 					// written to the insert_id
 					if (
+						// FIXME: all return insert_id should be array only
+						/** @phpstan-ignore-next-line */
 						count($this->insert_id[0]) > 1 ||
+						/** @phpstan-ignore-next-line */
 						!array_key_exists($this->prepare_cursor[$stm_name]['pk_name'], $this->insert_id[0])
 					) {
 						$this->insert_id_ext = $this->insert_id[0];
+						/** @phpstan-ignore-next-line */
 						$this->insert_id = $this->insert_id[0][$this->prepare_cursor[$stm_name]['pk_name']];
 					} elseif ($this->insert_id[0][$this->prepare_cursor[$stm_name]['pk_name']]) {
 						$this->insert_id = $this->insert_id[0][$this->prepare_cursor[$stm_name]['pk_name']];
@@ -1996,12 +2083,12 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * writes into one table based on array of table columns
-	 * @param  array    $write_array     list of elements to write
-	 * @param  array    $not_write_array list of elements not to write
-	 * @param  int      $primary_key     id key to decide if we write insert or update
-	 * @param  string   $table           name for the target table
-	 * @param  array    $data            data array to override _POST data
-	 * @return int|bool                  primary key
+	 * @param  array $write_array     list of elements to write
+	 * @param  array $not_write_array list of elements not to write
+	 * @param  int          $primary_key     id key to decide if we write insert or update
+	 * @param  string       $table           name for the target table
+	 * @param  array $data            data array to override _POST data
+	 * @return int|bool                      primary key
 	 */
 	public function dbWriteData(
 		array $write_array,
@@ -2032,13 +2119,15 @@ class IO extends \CoreLibs\Basic
 	 * PARAM INFO: $primary key
 	 * this can be a plain string/int and will be internal transformed into the array form
 	 * or it takes the array form of array [row => column, value => pk value]
-	 * @param  array            $write_array            list of elements to write
-	 * @param  int|string|array $primary_key            primary key string or array set
-	 * @param  string           $table                  name for the target table
-	 * @param  array            $not_write_array        list of elements not to write (optional)
-	 * @param  array            $not_write_update_array list of elements not to write during update (optional)
-	 * @param  array            $data                   optional array with data, if not _POST vars are used
-	 * @return int|bool                          primary key
+	 * @param  array            $write_array     list of elements to write
+	 * @param  int|string|array $primary_key     primary key string or array set
+	 * @param  string                  $table           name for the target table
+	 * @param  array            $not_write_array list of elements not to write (optional)
+	 * @param  array            $not_write_update_array list of elements not
+	 *                                                         to write during update (optional)
+	 * @param  array            $data            optional array with data
+	 *                                                  if not _POST vars are used
+	 * @return int|bool                                 primary key
 	 */
 	public function dbWriteDataExt(
 		array $write_array,
@@ -2066,6 +2155,9 @@ class IO extends \CoreLibs\Basic
 		$q_sub_data = '';
 		// get the table layout and row types
 		$table_data = $this->dbShowTableMetaData(($this->db_schema ? $this->db_schema . '.' : '') . $table);
+		if (!is_array($table_data)) {
+			return false;
+		}
 		// @phan HACK
 		$primary_key['value'] = $primary_key['value'] ?? '';
 		$primary_key['row'] = $primary_key['row'] ?? '';
@@ -2186,21 +2278,22 @@ class IO extends \CoreLibs\Basic
 		$milliseconds = $matches[6];
 
 		return $prefix
-			. ($hour ? $hour . 'h ' : '')
-			. ($minutes ? $minutes . 'm ' : '')
-			. ($seconds ? $seconds . 's' : '')
-			. ($show_micro && $milliseconds ? ' ' . $milliseconds . 'ms' : '');
+			. (!empty($hour) && is_string($hour) ? $hour . 'h ' : '')
+			. (!empty($minutes) && is_string($minutes) ? $minutes . 'm ' : '')
+			. (!empty($seconds) && is_string($seconds) ? $seconds . 's' : '')
+			. ($show_micro && !empty($milliseconds) ? ' ' . $milliseconds . 'ms' : '');
 	}
 
 	/**
 	 * this is only needed for Postgresql. Converts postgresql arrays to PHP
 	 * @param  string $text input text to parse to an array
-	 * @return array        PHP array of the parsed data
+	 * @return array PHP array of the parsed data
 	 */
 	public function dbArrayParse(string $text): array
 	{
 		$output = [];
-		return $this->db_functions->__dbArrayParse($text, $output);
+		$__db_array_parse = $this->db_functions->__dbArrayParse($text, $output);
+		return is_array($__db_array_parse) ? $__db_array_parse : [];
 	}
 
 	/**
@@ -2228,7 +2321,7 @@ class IO extends \CoreLibs\Basic
 				$value = $value === '' ? 0 : intval($value);
 				break;
 		}
-		return $value;
+		return (string)$value;
 	}
 
 	// ***************************
@@ -2237,42 +2330,48 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * return current set insert_id as is
-	 * @return array|string|int|null Primary key value, most likely int
-	 *                               Array for multiple return set
-	 *                               Empty string for unset
-	 *                               Null for error
+	 * @return array|string|int|bool|null Primary key value, most likely int
+	 *                                           Array for multiple return set
+	 *                                           Empty string for unset
+	 *                                           Null for error
 	 */
 	public function dbGetReturning()
 	{
+		// FIXME: this should be only an array
 		return $this->insert_id;
 	}
 
 	/**
 	 * alternative name, returns insert_id
-	 * @return array|string|int|null Primary key value, most likely int
-	 *                               Array for multiple return set
-	 *                               Empty string for unset
-	 *                               Null for error
+	 * @return array|string|int|bool|null Primary key value, most likely int
+	 *                                      Array for multiple return set
+	 *                                      Empty string for unset
+	 *                                      Null for error
 	 */
 	public function dbGetInsertPK()
 	{
+		// FIXME: this should be only an array
 		return $this->dbGetReturning();
 	}
 
 	/**
 	 * return the extended insert return string set
 	 * Most likely Array
-	 * @param  string|null       $key Optional key for insert_id_ext array
-	 *                                if found will return only this element,
-	 *                                else will return null
-	 * @return array|string|null      RETURNING values as array
-	 *                                Empty string for unset
-	 *                                Null for error
+	 * @param  string|null $key         Optional key for insert_id_ext array
+	 *                                  if found will return only this element,
+	 *                                  else will return null
+	 * @return array|string|int|bool|null RETURNING values as array
+	 *                                  Empty string for unset
+	 *                                  Null for error
 	 */
 	public function dbGetReturningExt($key = null)
 	{
+		// FIXME: this has to be better as in return
 		if ($key !== null) {
-			if (isset($this->insert_id_ext[$key])) {
+			if (
+				is_array($this->insert_id_ext) &&
+				isset($this->insert_id_ext[$key])
+			) {
 				return $this->insert_id_ext[$key];
 			} else {
 				return null;
@@ -2283,7 +2382,7 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * Always returns the returning block as an array
-	 * @return array All returning data as array. even if one row only
+	 * @return array All returning data as array. even if one row only
 	 */
 	public function dbGetReturningArray(): array
 	{
@@ -2292,17 +2391,20 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * returns the full array for cursor ext
-	 * @param  string|null $q Query string, if not null convert to md5
-	 *                        and return set cursor ext for only this
-	 *                        if not found or null return null
-	 * @return array|null     Cursor Extended array
-	 *                        Key is md5 string from query run
+	 * @param  string|null $q    Query string, if not null convert to md5
+	 *                           and return set cursor ext for only this
+	 *                           if not found or null return null
+	 * @return array|null Cursor Extended array
+	 *                           Key is md5 string from query run
 	 */
 	public function dbGetCursorExt($q = null)
 	{
 		if ($q !== null) {
 			$q_md5 = md5($q);
-			if (isset($this->cursor_ext[$q_md5])) {
+			if (
+				is_array($this->cursor_ext) &&
+				isset($this->cursor_ext[$q_md5])
+			) {
 				return $this->cursor_ext[$q_md5];
 			} else {
 				return null;
@@ -2326,8 +2428,8 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * old call for getInserReturnExt
-	 * @param  string|null       $key See above
-	 * @return array|string|null      See above
+	 * @param  string|null              $key See above
+	 * @return array|string|int|bool|null      See above
 	 * @deprecated use getReturningExt($key = null) instead
 	 */
 	public function getInsertReturn($key = null)
@@ -2338,7 +2440,7 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * DEPRECATED: getReturning
-	 * @return array|string|int|null [DEPRECATED]
+	 * @return array|string|int|bool|null [DEPRECATED]
 	 * @deprecated use dbGetReturning() instead
 	 */
 	public function getReturning()
@@ -2349,7 +2451,7 @@ class IO extends \CoreLibs\Basic
 
 	/**
 	 * DEPRECATED: getInsertPK
-	 * @return array|string|int|null [DEPRECATED]
+	 * @return array|string|int|bool|null [DEPRECATED]
 	 * @deprecated use dbGetInsertPK() instead
 	 */
 	public function getInsertPK()
@@ -2361,7 +2463,7 @@ class IO extends \CoreLibs\Basic
 	/**
 	 * DEPRECATED: getReturningExt
 	 * @param  string|null $key [DEPRECATED]
-	 * @return array|string|null [DEPRECATED]
+	 * @return array|string|bool|int|null [DEPRECATED]
 	 * @deprecated use dbGetReturningExt($key = null) instead
 	 */
 	public function getReturningExt($key = null)
@@ -2373,7 +2475,7 @@ class IO extends \CoreLibs\Basic
 	/**
 	 * DEPRECATED: getCursorExt
 	 * @param  string|null $q [DEPRECATED]
-	 * @return array|null [DEPRECATED]
+	 * @return array|null [DEPRECATED]
 	 * @deprecated use dbGetCursorExt($q = null) instead
 	 */
 	public function getCursorExt($q = null)
diff --git a/www/lib/CoreLibs/DB/SQL/PgSQL.php b/www/lib/CoreLibs/DB/SQL/PgSQL.php
index 02626e35..b6678143 100644
--- a/www/lib/CoreLibs/DB/SQL/PgSQL.php
+++ b/www/lib/CoreLibs/DB/SQL/PgSQL.php
@@ -50,7 +50,9 @@ namespace CoreLibs\DB\SQL;
 
 class PgSQL
 {
+	/** @var string */
 	private $last_error_query;
+	/** @var resource|bool */
 	private $dbh;
 
 	/**
@@ -81,6 +83,9 @@ class PgSQL
 	public function __dbQuery(string $query)
 	{
 		$this->last_error_query = '';
+		if (!is_resource($this->dbh)) {
+			return false;
+		}
 		// read out the query status and save the query if needed
 		$result = pg_query($this->dbh, $query);
 		if (!$result) {
@@ -96,7 +101,11 @@ class PgSQL
 	 */
 	public function __dbSendQuery(string $query): bool
 	{
-		return pg_send_query($this->dbh, $query);
+		if (!is_resource($this->dbh)) {
+			return false;
+		}
+		$result = pg_send_query($this->dbh, $query);
+		return $result ? true : false;
 	}
 
 	/**
@@ -106,7 +115,13 @@ class PgSQL
 	public function __dbGetResult()
 	{
 		$this->last_error_query = '';
+		if (!is_resource($this->dbh)) {
+			return false;
+		}
 		$result = pg_get_result($this->dbh);
+		if (!is_resource($result)) {
+			return false;
+		}
 		if ($error = pg_result_error($result)) {
 			$this->last_error_query = $error;
 		}
@@ -119,10 +134,11 @@ class PgSQL
 	 */
 	public function __dbClose(): void
 	{
-		if (is_resource($this->dbh)) {
-			if (pg_connection_status($this->dbh) === PGSQL_CONNECTION_OK) {
-				pg_close($this->dbh);
-			}
+		if (!is_resource($this->dbh)) {
+			return;
+		}
+		if (pg_connection_status($this->dbh) === PGSQL_CONNECTION_OK) {
+			pg_close($this->dbh);
 		}
 	}
 
@@ -134,6 +150,9 @@ class PgSQL
 	 */
 	public function __dbPrepare(string $name, string $query)
 	{
+		if (!is_resource($this->dbh)) {
+			return false;
+		}
 		$result = pg_prepare($this->dbh, $name, $query);
 		if (!$result) {
 			$this->last_error_query = $query;
@@ -144,11 +163,14 @@ class PgSQL
 	/**
 	 * wrapper for pg_execute for running a prepared statement
 	 * @param  string        $name statement name
-	 * @param  array         $data data array
+	 * @param  array  $data data array
 	 * @return resource|bool returns status or false for error
 	 */
 	public function __dbExecute(string $name, array $data)
 	{
+		if (!is_resource($this->dbh)) {
+			return false;
+		}
 		$result = pg_execute($this->dbh, $name, $data);
 		if (!$result) {
 			$this->last_error_query = $name;
@@ -192,7 +214,7 @@ class PgSQL
 	 * if through/true false, use __dbResultType(true)
 	 * @param  resource $cursor      cursor resource
 	 * @param  int      $result_type result type as int number
-	 * @return array|bool            array result data or false on end/error
+	 * @return array|bool     array result data or false on end/error
 	 */
 	public function __dbFetchArray($cursor, int $result_type = PGSQL_BOTH)
 	{
@@ -217,7 +239,7 @@ class PgSQL
 	/**
 	 * wrapper for pg_fetch_all
 	 * @param  resource   $cursor cursor resource
-	 * @return array|bool         data array or false for end/error
+	 * @return array|bool  data array or false for end/error
 	 */
 	public function __dbFetchAll($cursor)
 	{
@@ -269,7 +291,11 @@ class PgSQL
 			$q = "SELECT CURRVAL('$seq') AS insert_id";
 			// I have to do manually or I overwrite the original insert internal vars ...
 			if ($q = $this->__dbQuery($q)) {
-				list($id) = $this->__dbFetchArray($q);
+				// abort if this is not an resource
+				if (!is_resource($q)) {
+					return false;
+				}
+				list($id) = $this->__dbFetchArray($q) ?: [];
 			} else {
 				$id = [-1, $q];
 			}
@@ -294,7 +320,14 @@ class PgSQL
 			if ($schema) {
 				$q = "SHOW search_path";
 				$cursor = $this->__dbQuery($q);
-				$search_path = $this->__dbFetchArray($cursor)['search_path'];
+				if (!is_resource($cursor)) {
+					return false;
+				}
+				$__db_fetch_array = $this->__dbFetchArray($cursor);
+				if (!is_array($__db_fetch_array)) {
+					return false;
+				}
+				$search_path = $__db_fetch_array['search_path'] ?? '';
 				if ($search_path != $schema) {
 					$table_prefix = $schema . '.';
 				}
@@ -319,8 +352,12 @@ class PgSQL
 				. "pg_attribute.attnum = any(pg_index.indkey) "
 				. "AND indisprimary";
 			$cursor = $this->__dbQuery($q);
-			if ($cursor) {
-				return $this->__dbFetchArray($cursor)['column_name'] ?? false;
+			if (is_resource($cursor)) {
+				$__db_fetch_array = $this->__dbFetchArray($cursor);
+				if (!is_array($__db_fetch_array)) {
+					return false;
+				}
+				return $__db_fetch_array['column_name'] ?? false;
 			} else {
 				return false;
 			}
@@ -331,13 +368,13 @@ class PgSQL
 
 	/**
 	 * wrapper for pg_connect, writes out failure to screen if error occurs (hidden var)
-	 * @param  string    $db_host host name
-	 * @param  string    $db_user user name
-	 * @param  string    $db_pass password
-	 * @param  string    $db_name databse name
-	 * @param  integer   $db_port port (int, 5432 is default)
-	 * @param  string    $db_ssl  SSL (allow is default)
-	 * @return ?resource          db handler resource or null on error
+	 * @param  string        $db_host host name
+	 * @param  string        $db_user user name
+	 * @param  string        $db_pass password
+	 * @param  string        $db_name databse name
+	 * @param  integer       $db_port port (int, 5432 is default)
+	 * @param  string        $db_ssl  SSL (allow is default)
+	 * @return resource|bool          db handler resource or false on error
 	 */
 	public function __dbConnect(
 		string $db_host,
@@ -353,9 +390,9 @@ class PgSQL
 		}
 		$this->dbh = pg_connect("host=" . $db_host . " port=" . $db_port . " user="
 			. $db_user . " password=" . $db_pass . " dbname=" . $db_name . " sslmode=" . $db_ssl);
-		if (!$this->dbh) {
-			die("");
-		}
+		// if (!$this->dbh) {
+		// 	die("");
+		// }
 		return $this->dbh;
 	}
 
@@ -367,6 +404,9 @@ class PgSQL
 	 */
 	public function __dbPrintError($cursor = null): string
 	{
+		if (!is_resource($this->dbh)) {
+			return '';
+		}
 		// run the query again for the error result here
 		if (!$cursor && $this->last_error_query) {
 			pg_send_query($this->dbh, $this->last_error_query);
@@ -382,12 +422,15 @@ class PgSQL
 
 	/**
 	 * wrapper for pg_meta_data
-	 * @param  string $table    table name
-	 * @param  bool   $extended show extended info (default false)
-	 * @return array|bool       array data for the table info or false on error
+	 * @param  string $table     table name
+	 * @param  bool   $extended  show extended info (default false)
+	 * @return array|bool array data for the table info or false on error
 	 */
 	public function __dbMetaData(string $table, $extended = false)
 	{
+		if (!is_resource($this->dbh)) {
+			return false;
+		}
 		// needs to prefixed with @ or it throws a warning on not existing table
 		return @pg_meta_data($this->dbh, $table, $extended);
 	}
@@ -399,6 +442,9 @@ class PgSQL
 	 */
 	public function __dbEscapeString($string): string
 	{
+		if (!is_resource($this->dbh)) {
+			return '';
+		}
 		return pg_escape_string($this->dbh, (string)$string);
 	}
 
@@ -411,6 +457,9 @@ class PgSQL
 	 */
 	public function __dbEscapeLiteral($string): string
 	{
+		if (!is_resource($this->dbh)) {
+			return '';
+		}
 		return pg_escape_string($this->dbh, (string)$string);
 	}
 
@@ -421,6 +470,9 @@ class PgSQL
 	 */
 	public function __dbEscapeBytea($bytea): string
 	{
+		if (!is_resource($this->dbh)) {
+			return '';
+		}
 		return pg_escape_bytea($this->dbh, $bytea);
 	}
 
@@ -430,6 +482,9 @@ class PgSQL
 	 */
 	public function __dbConnectionBusy(): bool
 	{
+		if (!is_resource($this->dbh)) {
+			return false;
+		}
 		return pg_connection_busy($this->dbh);
 	}
 
@@ -441,6 +496,9 @@ class PgSQL
 	 */
 	public function __dbVersion(): string
 	{
+		if (!is_resource($this->dbh)) {
+			return '';
+		}
 		// array has client, protocol, server
 		// we just need the server
 		$v = pg_version($this->dbh);
@@ -449,11 +507,12 @@ class PgSQL
 
 	/**
 	 * postgresql array to php array
-	 * @param  string   $text    array text from PostgreSQL
-	 * @param  array    $output  (internal) recursive pass on for nested arrays
-	 * @param  bool|int $limit   (internal) max limit to not overshoot the end, start with false
-	 * @param  integer  $offset  (internal) shift offset for {}
-	 * @return array|int         converted PHP array, interal recusrive int position
+	 * @param  string           $text   array text from PostgreSQL
+	 * @param  array     $output (internal) recursive pass on for nested arrays
+	 * @param  bool|int         $limit  (internal) max limit to not overshoot
+	 *                                  the end, start with false
+	 * @param  integer          $offset (internal) shift offset for {}
+	 * @return array|int         converted PHP array, interal recusrive int position
 	 */
 	public function __dbArrayParse($text, &$output, $limit = false, $offset = 1)
 	{
diff --git a/www/lib/CoreLibs/Debug/Logging.php b/www/lib/CoreLibs/Debug/Logging.php
index 4437de0e..8112c4fd 100644
--- a/www/lib/CoreLibs/Debug/Logging.php
+++ b/www/lib/CoreLibs/Debug/Logging.php
@@ -27,38 +27,65 @@ namespace CoreLibs\Debug;
 class Logging
 {
 	// page and host name
+	/** @var string */
 	private $page_name;
+	/** @var string */
 	private $host_name;
+	/** @var int */
 	private $host_port;
 	// internal error reporting vars
+	/** @var array */
 	private $error_msg = []; // the "connection" to the outside errors
 	// debug output prefix
+	/** @var string */
 	private $error_msg_prefix = ''; // prefix to the error string (the class name)
 	// debug flags
+	/** @var array */
 	private $debug_output = []; // if this is true, show debug on desconstructor
+	/** @var array */
 	private $debug_output_not = [];
+	/** @var bool */
 	private $debug_output_all = false;
+	/** @var array */
 	private $echo_output = []; // errors: echo out, default is 1
+	/** @var array */
 	private $echo_output_not = [];
+	/** @var bool */
 	private $echo_output_all = false;
+	/** @var array */
 	private $print_output = []; // errors: print to file, default is 0
+	/** @var array */
 	private $print_output_not = [];
+	/** @var bool */
 	private $print_output_all = false;
 	// debug flags/settings
+	/** @var string */
 	private $running_uid = ''; // unique ID set on class init and used in logging as prefix
 	// log file name
+	/** @var string */
 	private $log_folder = '';
+	/** @var string */
 	private $log_file_name_ext = 'log'; // use this for date rotate
+	/** @var int */
 	private $log_max_filesize = 0; // set in kilobytes
+	/** @var string */
 	private $log_print_file = 'error_msg##LOGID####LEVEL####CLASS####PAGENAME####DATE##';
+	/** @var string */
 	private $log_file_unique_id; // a unique ID set only once for call derived from this class
+	/** @var bool */
 	private $log_print_file_date = true; // if set add Y-m-d and do automatic daily rotation
+	/** @var string */
 	private $log_file_id = ''; // a alphanumeric name that has to be set as global definition
+	/** @var bool */
 	private $log_per_level = false; // set, it will split per level (first parameter in debug call)
+	/** @var bool */
 	private $log_per_class = false; // set, will split log per class
+	/** @var bool */
 	private $log_per_page = false; // set, will split log per called file
+	/** @var bool */
 	private $log_per_run = false; // create a new log file per run (time stamp + unique ID)
 	// script running time
+	/** @var float */
 	private $script_starttime;
 
 	public function __construct()
@@ -282,7 +309,8 @@ class Logging
 	{
 		// get the last class entry and wrie that
 		$backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS) ?? [['class' => get_class($this)]];
-		return end($backtrace)['class'];
+		// make sure if false it is an array and then check if not class set return empty string
+		return (end($backtrace) ?: [])['class'] ?? '';
 	}
 
 	// *** PUBLIC ***
@@ -381,7 +409,7 @@ class Logging
 	 * @param  string      $flag  on/off
 	 * @param  string|null $level if not null then check if this array entry is set
 	 *                            else return false
-	 * @return bool|array         if $level is null, return array, else boolean true/false
+	 * @return bool|array  if $level is null, return array, else boolean true/false
 	 */
 	public function getLogLevel(string $type, string $flag, ?string $level = null)
 	{
@@ -439,8 +467,8 @@ class Logging
 	 * It uses some special code sets so we can convert that to pre flags
 	 * for echo output {##HTMLPRE##} ... {##/HTMLPRE##}
 	 * Do not use this without using it in a string in debug function
-	 * @param  array $a Array to format
-	 * @return string   print_r formated
+	 * @param  array $a Array to format
+	 * @return string          print_r formated
 	 */
 	public function prAr(array $a): string
 	{
@@ -486,9 +514,13 @@ class Logging
 				($strip ?
 					// find any 
 and replace them with \n
 					// strip rest of html elements (base only)
-					preg_replace("/(<\/?)(\w+)([^>]*>)/", '', str_replace('
', "\n", $prefix . $string)) :
+					preg_replace(
+						"/(<\/?)(\w+)([^>]*>)/",
+						'',
+						str_replace('
', "\n", $prefix . $string)
+					) :
 					$prefix . $string
-				)
+				) ?: ''
 			)
 			. "\n"
 		);
@@ -522,8 +554,8 @@ class Logging
 	/**
 	 * merges the given error array with the one from this class
 	 * only merges visible ones
-	 * @param  array  $error_msg error array
-	 * @return void              has no return
+	 * @param  array $error_msg error array
+	 * @return void                    has no return
 	 */
 	public function mergeErrors(array $error_msg = []): void
 	{
@@ -593,7 +625,7 @@ class Logging
 	/**
 	 * Get current error message array
 	 *
-	 * @return array error messages collected
+	 * @return array error messages collected
 	 */
 	public function getErrorMsg(): array
 	{
diff --git a/www/lib/CoreLibs/Debug/RunningTime.php b/www/lib/CoreLibs/Debug/RunningTime.php
index d8e1bb46..f4bed22a 100644
--- a/www/lib/CoreLibs/Debug/RunningTime.php
+++ b/www/lib/CoreLibs/Debug/RunningTime.php
@@ -11,12 +11,18 @@ namespace CoreLibs\Debug;
 class RunningTime
 {
 	// hr
+	/** @var float */
 	private static $hr_starttime;
+	/** @var float */
 	private static $hr_runtime;
+	/** @var float */
 	private static $hr_endtime;
 	// normal
+	/** @var float */
 	private static $starttime;
+	/** @var float */
 	private static $endtime;
+	/** @var string */
 	private static $runningtime_string;
 
 	/**
@@ -77,8 +83,8 @@ class RunningTime
 	 * on second call it sends the end time and then also prints the running time
 	 * Sets the internal runningtime_string variable with Start/End/Run time string
 	 * NOTE: for pure running time check it is recommended to use hrRunningTime method
-	 * @param  bool|boolean $simple     if true prints HTML strings, default text only
-	 * @return float                    running time as float number
+	 * @param  bool  $simple if true prints HTML strings, default text only
+	 * @return float         running time as float number
 	 */
 	public static function runningTime(bool $simple = false): float
 	{
diff --git a/www/lib/CoreLibs/Debug/Support.php b/www/lib/CoreLibs/Debug/Support.php
index 241b97e2..f7770a54 100644
--- a/www/lib/CoreLibs/Debug/Support.php
+++ b/www/lib/CoreLibs/Debug/Support.php
@@ -31,8 +31,8 @@ class Support
 
 	/**
 	 * prints a html formatted (pre) array
-	 * @param  array  $array any array
-	 * @return string        formatted array for output with 
 tag added
+	 * @param  array $array any array
+	 * @return string              formatted array for output with 
 tag added
 	 */
 	public static function printAr(array $array): string
 	{
diff --git a/www/lib/CoreLibs/Get/System.php b/www/lib/CoreLibs/Get/System.php
index f36fa62a..5d9cf87f 100644
--- a/www/lib/CoreLibs/Get/System.php
+++ b/www/lib/CoreLibs/Get/System.php
@@ -48,7 +48,7 @@ class System
 
 	/**
 	 * get the host name without the port as given by the SELF var
-	 * @return array host name/port name
+	 * @return array host name/port name
 	 */
 	public static function getHostName(): array
 	{
@@ -86,7 +86,7 @@ class System
 	/**
 	 * similar to getPageName, but it retuns the raw array
 	 *
-	 * @return array pathinfo array from PHP SELF
+	 * @return array pathinfo array from PHP SELF
 	 */
 	public static function getPageNameArray(): array
 	{
diff --git a/www/lib/CoreLibs/Language/Core/CachedFileReader.php b/www/lib/CoreLibs/Language/Core/CachedFileReader.php
index e6a2e5d2..adcd535c 100755
--- a/www/lib/CoreLibs/Language/Core/CachedFileReader.php
+++ b/www/lib/CoreLibs/Language/Core/CachedFileReader.php
@@ -28,21 +28,27 @@ namespace CoreLibs\Language\Core;
 // over it (it assumes knowledge of StringReader internals)
 class CachedFileReader extends \CoreLibs\Language\Core\StringReader
 {
+	/** @var int */
 	public $error = 0;
+	/** @var string */
 	public $fd_str = '';
 
-	public function __construct($filename)
+	/**
+	 * Undocumented function
+	 *
+	 * @param string $filename
+	 */
+	public function __construct(string $filename)
 	{
 		parent::__construct();
 		if (file_exists($filename)) {
-			$length = filesize($filename);
 			$fd = fopen($filename, 'rb');
-
-			if (!$fd) {
+			if (!is_resource($fd)) {
 				$this->error = 3; // Cannot read file, probably permissions
+			} else {
+				$this->fd_str = fread($fd, filesize($filename) ?: 0) ?: '';
+				fclose($fd);
 			}
-			$this->fd_str = fread($fd, $length);
-			fclose($fd);
 		} else {
 			$this->error = 2; // File doesn't exist
 		}
diff --git a/www/lib/CoreLibs/Language/Core/FileReader.php b/www/lib/CoreLibs/Language/Core/FileReader.php
index 5b5688e7..17bf0dce 100755
--- a/www/lib/CoreLibs/Language/Core/FileReader.php
+++ b/www/lib/CoreLibs/Language/Core/FileReader.php
@@ -26,9 +26,13 @@ namespace CoreLibs\Language\Core;
 
 class FileReader
 {
+	/** @var int */
 	public $fr_pos;
+	/** @var resource|bool */
 	public $fr_fd;
+	/** @var int */
 	public $fr_length;
+	/** @var int */
 	public $error = 0;
 
 	/**
@@ -38,10 +42,10 @@ class FileReader
 	public function __construct($filename)
 	{
 		if (file_exists($filename)) {
-			$this->fr_length = filesize($filename);
+			$this->fr_length = filesize($filename) ?: 0;
 			$this->fr_pos = 0;
 			$this->fr_fd = fopen($filename, 'rb');
-			if (!$this->fr_fd) {
+			if (!is_resource($this->fr_fd)) {
 				$this->error = 3; // Cannot read file, probably permissions
 			}
 		} else {
@@ -56,23 +60,25 @@ class FileReader
 	 */
 	public function read($bytes)
 	{
-		if ($bytes) {
-			fseek($this->fr_fd, $this->fr_pos);
-
-			// PHP 5.1.1 does not read more than 8192 bytes in one fread()
-			// the discussions at PHP Bugs suggest it's the intended behaviour
-			$data = '';
-			while ($bytes > 0) {
-				$chunk = fread($this->fr_fd, $bytes);
-				$data .= $chunk;
-				$bytes -= strlen($chunk);
-			}
-			$this->fr_pos = ftell($this->fr_fd);
-
-			return $data;
-		} else {
+		if (!$bytes || !is_resource($this->fr_fd)) {
 			return '';
 		}
+		fseek($this->fr_fd, $this->fr_pos);
+
+		// PHP 5.1.1 does not read more than 8192 bytes in one fread()
+		// the discussions at PHP Bugs suggest it's the intended behaviour
+		$data = '';
+		while ($bytes > 0) {
+			$chunk = fread($this->fr_fd, $bytes);
+			if ($chunk === false) {
+				break;
+			}
+			$data .= $chunk;
+			$bytes -= strlen($chunk);
+		}
+		$this->fr_pos = ftell($this->fr_fd) ?: 0;
+
+		return $data;
 	}
 
 	/**
@@ -82,8 +88,11 @@ class FileReader
 	 */
 	public function seekto($pos)
 	{
+		if (!is_resource($this->fr_fd)) {
+			return 0;
+		}
 		fseek($this->fr_fd, $pos);
-		$this->fr_pos = ftell($this->fr_fd);
+		$this->fr_pos = ftell($this->fr_fd) ?: 0;
 		return $this->fr_pos;
 	}
 
@@ -111,7 +120,9 @@ class FileReader
 	 */
 	public function close(): void
 	{
-		fclose($this->fr_fd);
+		if (is_resource($this->fr_fd)) {
+			fclose($this->fr_fd);
+		}
 	}
 }
 
diff --git a/www/lib/CoreLibs/Language/Core/GetTextReader.php b/www/lib/CoreLibs/Language/Core/GetTextReader.php
index 65c7d2fb..550a1125 100755
--- a/www/lib/CoreLibs/Language/Core/GetTextReader.php
+++ b/www/lib/CoreLibs/Language/Core/GetTextReader.php
@@ -40,19 +40,31 @@ namespace CoreLibs\Language\Core;
 class GetTextReader
 {
 	// public:
+	/** @var int */
 	public $error = 0; // public variable that holds error code (0 if no error)
 
 	// private:
+	/** @var int */
 	private $BYTEORDER = 0;        // 0: low endian, 1: big endian
-	private $STREAM = null;
+	/** @var FileReader */
+	private $STREAM;
+	/** @var bool */
 	private $short_circuit = false;
+	/** @var bool */
 	private $enable_cache = false;
-	private $originals = null;      // offset of original table
-	private $translations = null;    // offset of translation table
-	private $pluralheader = null;    // cache header field for plural forms
+	/** @var int */
+	private $originals = 0;      // offset of original table
+	/** @var int */
+	private $translations = 0;    // offset of translation table
+	/** @var string */
+	private $pluralheader = '';    // cache header field for plural forms
+	/** @var int */
 	private $total = 0;          // total string count
+	/** @var array|null */
 	private $table_originals = null;  // table for original strings (offsets)
+	/** @var array|null */
 	private $table_translations = null;  // table for translated strings (offsets)
+	/** @var array */
 	private $cache_translations = [];  // original -> translation mapping
 
 
@@ -69,13 +81,12 @@ class GetTextReader
 	{
 		if ($this->BYTEORDER == 0) {
 			// low endian
-			$input = unpack('V', $this->STREAM->read(4));
-			return array_shift($input);
+			$input = unpack('V', $this->STREAM->read(4)) ?: [];
 		} else {
 			// big endian
-			$input = unpack('N', $this->STREAM->read(4));
-			return array_shift($input);
+			$input = unpack('N', $this->STREAM->read(4)) ?: [];
 		}
+		return array_shift($input);
 	}
 
 	/**
@@ -92,24 +103,24 @@ class GetTextReader
 	* Reads an array of Integers from the Stream
 	*
 	* @param  int   $count How many elements should be read
-	* @return array        Array of Integers
+	* @return array Array of Integers
 	*/
 	public function readintarray($count)
 	{
 		if ($this->BYTEORDER == 0) {
 			// low endian
-			return unpack('V' . $count, $this->STREAM->read(4 * $count));
+			return unpack('V' . $count, $this->STREAM->read(4 * $count)) ?: [];
 		} else {
 			// big endian
-			return unpack('N' . $count, $this->STREAM->read(4 * $count));
+			return unpack('N' . $count, $this->STREAM->read(4 * $count)) ?: [];
 		}
 	}
 
 	/**
 	* Constructor
 	*
-	* @param object|bool $Reader       the StreamReader object
-	* @param bool        $enable_cache Enable or disable caching of strings (default on)
+	* @param FileReader|bool $Reader       the StreamReader object
+	* @param bool            $enable_cache Enable or disable caching of strings (default on)
 	*/
 	public function __construct($Reader, $enable_cache = true)
 	{
@@ -118,6 +129,11 @@ class GetTextReader
 			$this->short_circuit = true;
 			return;
 		}
+		// bail out for sure if this is not an objet here
+		if (!is_object($Reader)) {
+			$this->short_circuit = true;
+			return;
+		}
 
 		// Caching can be turned off
 		$this->enable_cache = $enable_cache;
@@ -125,7 +141,7 @@ class GetTextReader
 		$MAGIC1 = "\x95\x04\x12\xde";
 		$MAGIC2 = "\xde\x12\x04\x95";
 
-		$this->STREAM = (object)$Reader;
+		$this->STREAM = $Reader;
 		$magic = $this->read(4);
 		if ($magic == $MAGIC1) {
 			$this->BYTEORDER = 1;
@@ -149,8 +165,9 @@ class GetTextReader
 	* to speed up translation lookups
 	*
 	* @access private
+	* @return void
 	*/
-	private function load_tables()
+	private function loadTables(): void
 	{
 		if (
 			is_array($this->cache_translations) &&
@@ -190,10 +207,10 @@ class GetTextReader
 	* @param  int    $num Offset number of original string
 	* @return string      Requested string if found, otherwise ''
 	*/
-	private function get_original_string($num)
+	private function getOriginalString($num)
 	{
-		$length = $this->table_originals[$num * 2 + 1];
-		$offset = $this->table_originals[$num * 2 + 2];
+		$length = $this->table_originals[$num * 2 + 1] ?? 0;
+		$offset = $this->table_originals[$num * 2 + 2] ?? 0;
 		if (!$length) {
 			return '';
 		}
@@ -209,10 +226,10 @@ class GetTextReader
 	* @param  int    $num Offset number of original string
 	* @return string      Requested string if found, otherwise ''
 	*/
-	private function get_translation_string($num)
+	private function getTranslationString($num)
 	{
-		$length = $this->table_translations[$num * 2 + 1];
-		$offset = $this->table_translations[$num * 2 + 2];
+		$length = $this->table_translations[$num * 2 + 1] ?? 0;
+		$offset = $this->table_translations[$num * 2 + 2] ?? 0;
 		if (!$length) {
 			return '';
 		}
@@ -228,18 +245,18 @@ class GetTextReader
 	* @param  string           $string string to find
 	* @param  int              $start  (internally used in recursive function)
 	* @param  int              $end    (internally used in recursive function)
-	* @return int|string|float         (offset in originals table)
+	* @return int                      (offset in originals table)
 	*/
-	private function find_string($string, $start = -1, $end = -1)
+	private function findString($string, $start = -1, $end = -1)
 	{
 		if (($start == -1) or ($end == -1)) {
-			// find_string is called with only one parameter, set start end end
+			// findString is called with only one parameter, set start end end
 			$start = 0;
 			$end = $this->total;
 		}
 		if (abs($start - $end) <= 1) {
 			// We're done, now we either found the string, or it doesn't exist
-			$txt = $this->get_original_string($start);
+			$txt = $this->getOriginalString($start);
 			if ($string == $txt) {
 				return $start;
 			} else {
@@ -247,20 +264,20 @@ class GetTextReader
 			}
 		} elseif ($start > $end) {
 			// start > end -> turn around and start over
-			return $this->find_string($string, $end, $start);
+			return $this->findString($string, $end, $start);
 		} else {
 			// Divide table in two parts
 			$half = (int)(($start + $end) / 2);
-			$cmp = strcmp($string, $this->get_original_string($half));
+			$cmp = strcmp($string, $this->getOriginalString($half));
 			if ($cmp == 0) {
 				// string is exactly in the middle => return it
 				return $half;
 			} elseif ($cmp < 0) {
 				// The string is in the upper half
-				return $this->find_string($string, $start, $half);
+				return $this->findString($string, $start, $half);
 			} else {
 				// Translateshe string is in the lower half
-				return $this->find_string($string, $half, $end);
+				return $this->findString($string, $half, $end);
 			}
 		}
 	}
@@ -277,7 +294,7 @@ class GetTextReader
 		if ($this->short_circuit) {
 			return $string;
 		}
-		$this->load_tables();
+		$this->loadTables();
 
 		if ($this->enable_cache) {
 			// Caching enabled, get translated string from cache
@@ -288,11 +305,11 @@ class GetTextReader
 			}
 		} else {
 			// Caching not enabled, try to find string
-			$num = $this->find_string($string);
+			$num = $this->findString($string);
 			if ($num == -1) {
 				return $string;
 			} else {
-				return $this->get_translation_string($num);
+				return $this->getTranslationString($num);
 			}
 		}
 	}
@@ -304,7 +321,7 @@ class GetTextReader
 	* @param  string $expr an expression to match
 	* @return string       sanitized plural form expression
 	*/
-	private function sanitize_plural_expression($expr)
+	private function sanitizePluralExpression($expr)
 	{
 		// Get rid of disallowed characters.
 		$expr = preg_replace('@[^a-zA-Z0-9_:;\(\)\?\|\&=!<>+*/\%-]@', '', $expr);
@@ -341,7 +358,7 @@ class GetTextReader
 	* @param  string $header header search in plurals
 	* @return string         verbatim plural form header field
 	*/
-	private function extract_plural_forms_header_from_po_header($header)
+	private function extractPluralFormsHeaderFromPoHeader($header)
 	{
 		if (preg_match("/(^|\n)plural-forms: ([^\n]*)\n/i", $header, $regs)) {
 			$expr = $regs[2];
@@ -357,21 +374,21 @@ class GetTextReader
 	* @access private
 	* @return string plural form header
 	*/
-	private function get_plural_forms()
+	private function getPluralForms()
 	{
 		// lets assume message number 0 is header
 		// this is true, right?
-		$this->load_tables();
+		$this->loadTables();
 
 		// cache header field for plural forms
 		if (! is_string($this->pluralheader)) {
 			if ($this->enable_cache) {
 				$header = $this->cache_translations[''];
 			} else {
-				$header = $this->get_translation_string(0);
+				$header = $this->getTranslationString(0);
 			}
-			$expr = $this->extract_plural_forms_header_from_po_header($header);
-			$this->pluralheader = $this->sanitize_plural_expression($expr);
+			$expr = $this->extractPluralFormsHeaderFromPoHeader($header);
+			$this->pluralheader = $this->sanitizePluralExpression($expr);
 		}
 		return $this->pluralheader;
 	}
@@ -383,9 +400,9 @@ class GetTextReader
 	* @param  string $n count
 	* @return int       array index of the right plural form
 	*/
-	private function select_string($n)
+	private function selectString($n)
 	{
-		$string = $this->get_plural_forms();
+		$string = $this->getPluralForms();
 		$string = str_replace('nplurals', "\$total", $string);
 		$string = str_replace("n", $n, $string);
 		$string = str_replace('plural', "\$plural", $string);
@@ -421,7 +438,7 @@ class GetTextReader
 		}
 
 		// find out the appropriate form
-		$select = $this->select_string($number);
+		$select = $this->selectString($number);
 
 		// this should contains all strings separated by NULLs
 		$key = $single . chr(0) . $plural;
@@ -435,11 +452,11 @@ class GetTextReader
 				return $list[$select];
 			}
 		} else {
-			$num = $this->find_string($key);
+			$num = $this->findString($key);
 			if ($num == -1) {
 				return ($number != 1) ? $plural : $single;
 			} else {
-				$result = $this->get_translation_string($num);
+				$result = $this->getTranslationString($num);
 				$list = explode(chr(0), $result);
 				return $list[$select];
 			}
diff --git a/www/lib/CoreLibs/Language/Core/StringReader.php b/www/lib/CoreLibs/Language/Core/StringReader.php
index cbee6d15..4bf0a7d3 100755
--- a/www/lib/CoreLibs/Language/Core/StringReader.php
+++ b/www/lib/CoreLibs/Language/Core/StringReader.php
@@ -26,7 +26,9 @@ namespace CoreLibs\Language\Core;
 
 class StringReader
 {
+	/** @var int */
 	public $sr_pos;
+	/** @var string */
 	public $sr_str;
 
 	/**
diff --git a/www/lib/CoreLibs/Language/Encoding.php b/www/lib/CoreLibs/Language/Encoding.php
index ae914650..8dd2f493 100644
--- a/www/lib/CoreLibs/Language/Encoding.php
+++ b/www/lib/CoreLibs/Language/Encoding.php
@@ -10,6 +10,7 @@ namespace CoreLibs\Language;
 
 class Encoding
 {
+	/** @var string */
 	private static $mb_error_char = '';
 
 	/**
@@ -82,7 +83,7 @@ class Encoding
 	 * @param  string     $string        string to test
 	 * @param  string     $from_encoding encoding of string to test
 	 * @param  string     $to_encoding   target encoding
-	 * @return bool|array            false if no error or array with failed characters
+	 * @return bool|array        false if no error or array with failed characters
 	 */
 	public static function checkConvertEncoding(string $string, string $from_encoding, string $to_encoding)
 	{
diff --git a/www/lib/CoreLibs/Language/L10n.php b/www/lib/CoreLibs/Language/L10n.php
index bf5d1e76..5526616d 100644
--- a/www/lib/CoreLibs/Language/L10n.php
+++ b/www/lib/CoreLibs/Language/L10n.php
@@ -33,9 +33,13 @@ use CoreLibs\Language\Core\GetTextReader;
 
 class L10n extends \CoreLibs\Basic
 {
+	/** @var string */
 	private $lang = '';
+	/** @var string */
 	private $mofile = '';
+	/** @var FileReader|bool */
 	private $input;
+	/** @var GetTextReader */
 	private $l10n;
 
 	/**
diff --git a/www/lib/CoreLibs/Output/Form/Elements.php b/www/lib/CoreLibs/Output/Form/Elements.php
index 10aab431..4577ca8e 100644
--- a/www/lib/CoreLibs/Output/Form/Elements.php
+++ b/www/lib/CoreLibs/Output/Form/Elements.php
@@ -59,7 +59,10 @@ class Elements
 		$hour = !$hour ? date('H', $timestamp) : $hour;
 		$min = !$min ? date('i', $timestamp) : $min; // add to five min?
 		// max days in selected month
-		$days_in_month = date('t', strtotime($year . '-' . $month . '-' . $day . ' ' . $hour . ':' . $min . ':0'));
+		$days_in_month = date(
+			't',
+			strtotime($year . '-' . $month . '-' . $day . ' ' . $hour . ':' . $min . ':0') ?: null
+		);
 		$string = '';
 		// from now to ?
 		if ($name_pos_back === false) {
@@ -93,7 +96,7 @@ class Elements
 			// set weekday text based on current month ($month) and year ($year)
 			$string .= '';
+				. ' (' . date('D', mktime(0, 0, 0, (int)$month, $i, (int)$year) ?: null) . ')';
 		}
 		$string .= ' ';
 		if ($name_pos_back === true) {
@@ -142,8 +145,8 @@ class Elements
 		$protList = ["http", "https", "ftp", "news", "nntp"];
 
 		// find urls w/o  protocol
-		$output = preg_replace("/([^\/])www\.([\w\.-]+)\.([a-zA-Z]{2,4})/", "\\1http://www.\\2.\\3", $output);
-		$output = preg_replace("/([^\/])ftp\.([\w\.-]+)\.([a-zA-Z]{2,4})/", "\\1ftp://ftp.\\2.\\3", $output);
+		$output = preg_replace("/([^\/])www\.([\w\.-]+)\.([a-zA-Z]{2,4})/", "\\1http://www.\\2.\\3", $output) ?: '';
+		$output = preg_replace("/([^\/])ftp\.([\w\.-]+)\.([a-zA-Z]{2,4})/", "\\1ftp://ftp.\\2.\\3", $output) ?: '';
 
 		// remove doubles, generate protocol-regex
 		// DIRTY HACK
@@ -181,7 +184,7 @@ class Elements
 				);
 			},
 			$output
-		);
+		) ?: '';
 		// find email-addresses, but not mailto prefix ones
 		$output = preg_replace_callback(
 			"/(mailto:)?(\>)?\b([\w\.-]+)@([\w\.\-]+)\.([a-zA-Z]{2,4})\b(\|([^\||^#]+)(#([^\|]+))?\|)?/",
@@ -197,7 +200,7 @@ class Elements
 				);
 			},
 			$output
-		);
+		) ?: '';
 
 		// we have one slashes after the Protocol -> internal link no domain, strip out the proto
 		// $output = preg_replace("/($protRegex)\/(.*)/e", "\\2", $ouput);
diff --git a/www/lib/CoreLibs/Output/Form/Generate.php b/www/lib/CoreLibs/Output/Form/Generate.php
index ba2e5e4b..b2c44729 100644
--- a/www/lib/CoreLibs/Output/Form/Generate.php
+++ b/www/lib/CoreLibs/Output/Form/Generate.php
@@ -222,48 +222,78 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 {
 	// for the load statetment describes which elements from
 	// the load query should be shown and i which format
+	/** @var array */
 	public $field_array = [];
+	/** @var string */
 	public $load_query; // the query needed for loading a data set (one row in the table)
+	/** @var string */
 	public $col_name; // the name of the columen (before _) [used for order button]
+	/** @var int */
 	public $yes; // the yes flag that triggers the template to show ALL and not only new/load
+	/** @var string */
 	public $msg; // the error msg
+	/** @var int */
 	public $error; // the error flag set for printing red error msg
+	/** @var int */
 	public $warning; // warning flag, for information (saved, loaded, etc)
+	/** @var string */
 	public $archive_pk_name; // the pk name for the load select form
+	/** @var string */
 	private $int_pk_name; // primary key, only internal usage
+	/** @var array */
 	public $reference_array = []; // reference arrays -> stored in $this->reference_array[$table_name] => [];
+	/** @var array */
 	public $element_list; // element list for elements next to each other as a special sub group
+	/** @var array */
 	public $table_array = [];
+	/** @var string */
 	public $my_page_name; // the name of the page without .php extension
+	/** @var bool */
 	public $mobile_phone = false;
 	// buttons and checkboxes
+	/** @var string */
 	public $archive;
+	/** @var string */
 	public $new;
+	/** @var string */
 	public $really_new;
+	/** @var string */
 	public $delete;
+	/** @var string */
 	public $really_delete;
+	/** @var string */
 	public $save;
+	/** @var string */
 	public $remove_button;
 	// security publics
+	/** @var int */
 	public $base_acl_level;
+	/** @var array */
 	public $security_level;
 	// layout publics
+	/** @var int */
 	public $table_width;
 	// internal lang & encoding vars
+	/** @var string */
 	public $lang_dir = '';
+	/** @var string */
 	public $lang;
+	/** @var string */
 	public $lang_short;
+	/** @var string */
 	public $encoding;
 	// language
+	/** @var \CoreLibs\Language\L10n */
 	public $l;
 
 	// now some default error msgs (english)
+	/** @var array */
 	public $language_array = [];
 
 	/**
 	 * construct form generator
-	 * @param array       $db_config   db config array
-	 * @param int|integer $table_width table/div width (default 750)
+	 * @param array $db_config   db config array
+	 * @param int|integer  $table_width table/div width (default 750)
 	 */
 	public function __construct(array $db_config, int $table_width = 750)
 	{
@@ -478,7 +508,7 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 	 * array of fields
 	 * @param  string      $want_key  the key where you want the data from
 	 * @param  string|null $key_value if set searches for special right value
-	 * @return array                  found key fields
+	 * @return array           found key fields
 	 */
 	public function formGetColNameArrayFromKey(string $want_key, ?string $key_value = null): array
 	{
@@ -500,7 +530,7 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 
 	/**
 	 * formated output for the error && warning msg
-	 * @return array error message with msg, width, clas
+	 * @return array error message with msg, width, clas
 	 */
 	public function formPrintMsg(): array
 	{
@@ -605,9 +635,9 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 
 	/**
 	 * default delete procedure
-	 * @param  array $element_list element array that should be removed
-	 * @param  array $remove_name  key names that should be removed
-	 * @return void                has no return
+	 * @param  array $element_list element array that should be removed
+	 * @param  array $remove_name  key names that should be removed
+	 * @return void                       has no return
 	 */
 	public function formProcedureDeleteFromElementList(array $element_list, array $remove_name): void
 	{
@@ -704,7 +734,7 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 
 	/**
 	 * create the load list and return it as an array
-	 * @return array load list array with primary key, name and selected entry
+	 * @return array load list array with primary key, name and selected entry
 	 */
 	public function formCreateLoad(): array
 	{
@@ -721,7 +751,7 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 
 			// load list data
 			$this->dbExec($this->load_query);
-			while ($res = $this->dbFetchArray()) {
+			while (is_array($res = $this->dbFetchArray())) {
 				$pk_ids[] = $res[$this->int_pk_name];
 				if (
 					isset($this->table_array[$this->int_pk_name]['value']) &&
@@ -766,8 +796,8 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 
 	/**
 	 * Create new entry element for HTML output
-	 * @param  bool $hide_new_checkbox show or hide the new checkbox, default is false
-	 * @return array                   return the new create array with name & checkbox show flag
+	 * @param  bool $hide_new_checkbox  show or hide the new checkbox, default is false
+	 * @return array return the new create array with name & checkbox show flag
 	 */
 	public function formCreateNew($hide_new_checkbox = false): array
 	{
@@ -798,7 +828,8 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 	 * create the save and delete element html group data
 	 * @param  bool  $hide_delete          hide the delete button (default false)
 	 * @param  bool  $hide_delete_checkbox hide the delete checkbox (default false)
-	 * @return array                       return the hide/show delete framework for html creation
+	 * @return array         return the hide/show delete framework
+	 *                                     for html creation
 	 */
 	public function formCreateSaveDelete($hide_delete = false, $hide_delete_checkbox = false): array
 	{
@@ -853,8 +884,9 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 	 * @param  string      $element_name the name from the array, you want to have build
 	 * @param  string|null $query        can overrule internal query data,
 	 *                                   for drop down, as data comes from a reference table
-	 *                                   for drop_down_text it has to be an array with $key->$valu
-	 * @return array                     html settings array
+	 *                                   for drop_down_text it has to be an
+	 *                                   array with $key->$value
+	 * @return array       html settings array
 	 */
 	public function formCreateElement(string $element_name, ?string $query = null): array
 	{
@@ -993,7 +1025,7 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 			$data['name'] = $element_name;
 			$data['value'][] = '';
 			$data['output'][] = $this->l->__('Please choose .. . ');
-			while ($res = $this->dbReturn($query)) {
+			while (is_array($res = $this->dbReturn($query))) {
 				$data['value'][] = $res[0];
 				$data['output'][] = $res[1];
 				if (
@@ -1309,22 +1341,18 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 			}
 		} // while
 		// do check for reference tables
-		if (is_array($this->reference_array)) {
-			reset($this->reference_array);
-			foreach ($this->reference_array as $key => $value) {
-				if (
-					isset($this->reference_array[$key]['mandatory']) &&
-					$this->reference_array[$key]['mandatory'] &&
-					!$this->reference_array[$key]['selected'][0]
-				) {
-					$this->msg .= sprintf(
-						$this->l->__('Please select at least one Element from field %s!
'),
-						$this->reference_array[$key]['output_name']
-					);
-				}
+		reset($this->reference_array);
+		foreach ($this->reference_array as $key => $value) {
+			if (
+				isset($this->reference_array[$key]['mandatory']) &&
+				$this->reference_array[$key]['mandatory'] &&
+				!$this->reference_array[$key]['selected'][0]
+			) {
+				$this->msg .= sprintf(
+					$this->l->__('Please select at least one Element from field %s!
'),
+					$this->reference_array[$key]['output_name']
+				);
 			}
-		} else {
-			$this->reference_array = [];
 		}
 		// $this->log->debug('edit_error', 'QS: 
' . print_r($_POST, true) . '
');
 		if (is_array($this->element_list)) {
@@ -1502,7 +1530,7 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 
 	/**
 	 * sets the order to the maximum, if order flag is set in array
-	 * @return array table array with set order number
+	 * @return array table array with set order number
 	 */
 	public function formSetOrder(): array
 	{
@@ -1593,7 +1621,7 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 				$q = 'SELECT ' . $this->reference_array[$key]['other_table_pk']
 					. ' FROM ' . $this->reference_array[$key]['table_name']
 					. ' WHERE ' . $this->int_pk_name . ' = ' . $this->table_array[$this->int_pk_name]['value'];
-				while ($res = $this->dbReturn($q)) {
+				while (is_array($res = $this->dbReturn($q))) {
 					$this->reference_array[$key]['selected'][] = $res[$this->reference_array[$key]['other_table_pk']];
 				}
 			}
@@ -1646,7 +1674,7 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 						. ' (' . $this->table_array[$key]['input_name'] . ') VALUES ('
 						. "'" . $this->dbEscapeString($this->table_array[$key]['input_value']) . "')";
 					$this->dbExec($q);
-					if (!empty($this->table_array[$key]['where'])) {
+					if (!empty($this->table_array[$key]['where']) && is_numeric($this->insert_id)) {
 						// make an update on the just inseted data with the where data als update values
 						$q = 'UPDATE ' . $this->table_array[$key]['table_name'] . ' SET ';
 						$q .= $this->table_array[$key]['where'] . ' ';
@@ -2039,8 +2067,8 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 
 	/**
 	 * creates HTML hidden input fields out of an hash array
-	 * @param  array $hidden_array The list of fields to be added as hidden
-	 * @return array               key -> value list of hidden fileds data
+	 * @param  array $hidden_array The list of fields to be added as hidden
+	 * @return array               key -> value list of hidden fileds data
 	 */
 	public function formCreateHiddenFields(array $hidden_array = []): array
 	{
@@ -2072,8 +2100,8 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 
 	/**
 	 * creates the multiple select part for a reference_table
-	 * @param  string $table_name Table name for reference array lookup
-	 * @return array              Reference table output array
+	 * @param  string $table_name  Table name for reference array lookup
+	 * @return array Reference table output array
 	 */
 	public function formCreateElementReferenceTable(string $table_name): array
 	{
@@ -2087,7 +2115,7 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 		}
 		$data['name'] = $this->reference_array[$table_name]['other_table_pk'];
 		$data['size'] = $this->reference_array[$table_name]['select_size'];
-		while ($res = $this->dbReturn($this->reference_array[$table_name]['query'])) {
+		while (is_array($res = $this->dbReturn($this->reference_array[$table_name]['query']))) {
 			$data['value'][] = $res[0];
 			$data['output'][] = $res[1];
 			$data['selected'][] = (\CoreLibs\Convert\Html::checked(
@@ -2109,8 +2137,8 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 	 * this currently only works for a list that is filled from a sub table and creates
 	 * only a connection to this one new version will allow a sub list with free input
 	 * fields to directly fill a sub table to a master table
-	 * @param  string $table_name which element entry to create
-	 * @return array              element for html creation
+	 * @param  string $table_name  Which element entry to create
+	 * @return array Element for html creation
 	 */
 	public function formCreateElementListTable(string $table_name): array
 	{
@@ -2189,7 +2217,7 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 			// only two elements are allowed: pos 0 is key, pso 1 is visible output name
 			if (isset($data_array['type']) && $data_array['type'] == 'drop_down_db') {
 				$md_q = md5($data_array['query']);
-				while ($res = $this->dbReturn($data_array['query'])) {
+				while (is_array($res = $this->dbReturn($data_array['query']))) {
 					/** @phan-suppress-next-line PhanTypeInvalidDimOffset */
 					$this->log->debug('edit', 'Q[' . $md_q . '] pos: ' . $this->cursor_ext[$md_q]['pos']
 						. ' | want: ' . ($data_array['preset'] ?? '-')
@@ -2332,7 +2360,7 @@ class Generate extends \CoreLibs\DB\Extended\ArrayIO
 		if (isset($q)) {
 			$pos = 0; // position in while for overwrite if needed
 			// read out the list and add the selected data if needed
-			while ($res = $this->dbReturn($q)) {
+			while (is_array($res = $this->dbReturn($q))) {
 				$_data = [];
 				$prfx = $data['prefix'] ?? ''; // short
 				// go through each res
diff --git a/www/lib/CoreLibs/Output/Image.php b/www/lib/CoreLibs/Output/Image.php
index 39b9f51d..de6132dc 100644
--- a/www/lib/CoreLibs/Output/Image.php
+++ b/www/lib/CoreLibs/Output/Image.php
@@ -127,7 +127,7 @@ class Image
 			$return_data = $thumb;
 			// if we have a delete filename, delete here with glob
 			if ($delete_filename) {
-				array_map('unlink', glob($delete_filename . '*'));
+				array_map('unlink', glob($delete_filename . '*') ?: []);
 			}
 		} else {
 			if (!empty($dummy) && strstr($dummy, '/') === false) {
@@ -255,11 +255,18 @@ class Image
 					) {
 						// image, copy source image, offset in image, source x/y, new size, source image size
 						$thumb = imagecreatetruecolor($thumb_width_r, $thumb_height_r);
+						if ($thumb === false) {
+							return false;
+						}
 						if ($img_type == IMAGETYPE_PNG) {
+							$imagecolorallocatealpha = imagecolorallocatealpha($thumb, 0, 0, 0, 127);
+							if ($imagecolorallocatealpha === false) {
+								return false;
+							}
 							// preservere transaprency
 							imagecolortransparent(
 								$thumb,
-								imagecolorallocatealpha($thumb, 0, 0, 0, 127)
+								$imagecolorallocatealpha
 							);
 							imagealphablending($thumb, false);
 							imagesavealpha($thumb, true);
@@ -274,7 +281,7 @@ class Image
 								break;
 						}
 						// check that we have a source image resource
-						if ($source !== null) {
+						if ($source !== null && $source !== false) {
 							// resize no shift
 							if ($high_quality === true) {
 								imagecopyresized(
@@ -356,10 +363,16 @@ class Image
 						$thumb_width = 250;
 					}
 					$thumb = imagecreatetruecolor($thumb_width, $thumb_height);
+					if ($thumb === false) {
+						return false;
+					}
 					// add outside border px = 5% (rounded up)
 					// eg 50px -> 2.5px
 					$gray = imagecolorallocate($thumb, 200, 200, 200);
 					$white = imagecolorallocate($thumb, 255, 255, 255);
+					if ($gray === false || $white === false) {
+						return false;
+					}
 					// fill gray background
 					imagefill($thumb, 0, 0, $gray);
 					// now create rectangle
@@ -407,55 +420,66 @@ class Image
 	 */
 	public static function correctImageOrientation($filename): void
 	{
-		if (function_exists('exif_read_data') && is_writeable($filename)) {
-			list($inc_width, $inc_height, $img_type) = getimagesize($filename);
-			// add @ to avoid "file not supported error"
-			$exif = @exif_read_data($filename);
-			$orientation = null;
-			$img = null;
-			if ($exif && isset($exif['Orientation'])) {
-				$orientation = $exif['Orientation'];
-			}
-			if ($orientation != 1) {
-				switch ($img_type) {
-					case IMAGETYPE_JPEG:
-						$img = imagecreatefromjpeg($filename);
-						break;
-					case IMAGETYPE_PNG:
-						$img = imagecreatefrompng($filename);
-						break;
-				}
-				$deg = 0;
-				// 1 top, 6: left, 8: right, 3: bottom
-				switch ($orientation) {
-					case 3:
-						$deg = 180;
-						break;
-					case 6:
-						$deg = -90;
-						break;
-					case 8:
-						$deg = 90;
-						break;
-				}
-				if ($img !== null) {
-					if ($deg) {
-						$img = imagerotate($img, $deg, 0);
-					}
-					// then rewrite the rotated image back to the disk as $filename
-					switch ($img_type) {
-						case IMAGETYPE_JPEG:
-							imagejpeg($img, $filename);
-							break;
-						case IMAGETYPE_PNG:
-							imagepng($img, $filename);
-							break;
-					}
-					// clean up image if we have an image
-					imagedestroy($img);
-				}
-			} // only if we need to rotate
-		} // function exists & file is writeable, else do nothing
+		// function exists & file is writeable, else do nothing
+		if (!function_exists('exif_read_data') || !is_writeable($filename)) {
+			return;
+		}
+		list($inc_width, $inc_height, $img_type) = getimagesize($filename);
+		// add @ to avoid "file not supported error"
+		$exif = @exif_read_data($filename);
+		$orientation = null;
+		$img = null;
+		if ($exif && isset($exif['Orientation'])) {
+			$orientation = $exif['Orientation'];
+		}
+		 // only if we need to rotate, if 1 it is already upright
+		if ($orientation === null || $orientation == 1) {
+			return;
+		}
+		switch ($img_type) {
+			case IMAGETYPE_JPEG:
+				$img = imagecreatefromjpeg($filename);
+				break;
+			case IMAGETYPE_PNG:
+				$img = imagecreatefrompng($filename);
+				break;
+		}
+		// no image loaded (wrong type)
+		if ($img === null || $img === false) {
+			return;
+		}
+		$deg = 0;
+		// 1 top, 6: left, 8: right, 3: bottom
+		switch ($orientation) {
+			case 3:
+				$deg = 180;
+				break;
+			case 6:
+				$deg = -90;
+				break;
+			case 8:
+				$deg = 90;
+				break;
+		}
+		// rotate if needed
+		if ($deg) {
+			$img = imagerotate($img, $deg, 0);
+		}
+		// rotate failed
+		if ($img === false) {
+			return;
+		}
+		// then rewrite the rotated image back to the disk as $filename
+		switch ($img_type) {
+			case IMAGETYPE_JPEG:
+				imagejpeg($img, $filename);
+				break;
+			case IMAGETYPE_PNG:
+				imagepng($img, $filename);
+				break;
+		}
+		// clean up image if we have an image
+		imagedestroy($img);
 	}
 }
 
diff --git a/www/lib/CoreLibs/Output/Progressbar.php b/www/lib/CoreLibs/Output/Progressbar.php
index db6cbb7f..7b4c1170 100644
--- a/www/lib/CoreLibs/Output/Progressbar.php
+++ b/www/lib/CoreLibs/Output/Progressbar.php
@@ -26,7 +26,7 @@ class ProgressBar
 	public $code;	// unique code
 	/** @var string */
 	public $status = 'new';	// current status (new,show,hide)
-	/** @var int */
+	/** @var float|int */
 	public $step = 0;	// current step
 	/** @var array */
 	public $position = [ // current bar position
@@ -223,8 +223,8 @@ class ProgressBar
 
 	/**
 	 * set the step
-	 * @param  float  $step percent step to do
-	 * @return void         has no return
+	 * @param  float $step percent step to do
+	 * @return void
 	 */
 	private function __setStep(float $step): void
 	{
@@ -242,7 +242,7 @@ class ProgressBar
 	 * set frame layout
 	 * @param  integer $width  bar width
 	 * @param  integer $height bar height
-	 * @return void            has no return
+	 * @return void
 	 */
 	public function setFrame(int $width = 0, int $height = 0): void
 	{
@@ -271,7 +271,7 @@ class ProgressBar
 	 * @param  string $type  label type
 	 * @param  string $name  label name (internal)
 	 * @param  string $value label output name (optional)
-	 * @return void          has no return
+	 * @return void
 	 */
 	public function addLabel(string $type, string $name, string $value = ' '): void
 	{
@@ -377,7 +377,7 @@ class ProgressBar
 	 * @param  string $value  button text (output)
 	 * @param  string $action button action (link)
 	 * @param  string $target button action target (default self)
-	 * @return void           has no return
+	 * @return void
 	 */
 	public function addButton(string $name, string $value, string $action, string $target = 'self'): void
 	{
@@ -394,7 +394,7 @@ class ProgressBar
 	 * @param  int    $width  width px
 	 * @param  int    $height height px
 	 * @param  string $align  alignment (left/right/etc), default empty
-	 * @return void           has no return
+	 * @return void
 	 */
 	public function setLabelPosition(
 		string $name,
@@ -440,7 +440,7 @@ class ProgressBar
 	 * set label color
 	 * @param  string $name  label name to set
 	 * @param  string $color color value in rgb html hex
-	 * @return void          has no return
+	 * @return void
 	 */
 	public function setLabelColor(string $name, string $color): void
 	{
@@ -456,7 +456,7 @@ class ProgressBar
 	 * set the label background color
 	 * @param  string $name  label name to set
 	 * @param  string $color background color to set in rgb html hex
-	 * @return void          has no return
+	 * @return void
 	 */
 	public function setLabelBackground(string $name, string $color): void
 	{
@@ -474,7 +474,7 @@ class ProgressBar
 	 * @param  int    $size   font size in px
 	 * @param  string $family font family (default empty)
 	 * @param  string $weight font weight (default empty)
-	 * @return void           has no return
+	 * @return void
 	 */
 	public function setLabelFont(string $name, int $size, string $family = '', string $weight = ''): void
 	{
@@ -523,7 +523,7 @@ class ProgressBar
 	 * set the label valeu
 	 * @param  string $name  label name to set
 	 * @param  string $value label value (output)
-	 * @return void          has no return
+	 * @return void
 	 */
 	public function setLabelValue(string $name, string $value): void
 	{
@@ -539,7 +539,7 @@ class ProgressBar
 	/**
 	 * set the bar color
 	 * @param  string $color color for the progress bar in rgb html hex
-	 * @return void          has no return
+	 * @return void
 	 */
 	public function setBarColor(string $color): void
 	{
@@ -554,7 +554,7 @@ class ProgressBar
 	/**
 	 * set the progress bar background color
 	 * @param  string $color background color in rgb html hex
-	 * @return void          has no return
+	 * @return void
 	 */
 	public function setBarBackground(string $color): void
 	{
@@ -569,7 +569,7 @@ class ProgressBar
 	/**
 	 * progress bar direct (left/right)
 	 * @param  string $direction set direction as left/right
-	 * @return void              has no return
+	 * @return void
 	 */
 	public function setBarDirection(string $direction): void
 	{
diff --git a/www/lib/FileUpload/Core/qqUploadedFile.php b/www/lib/FileUpload/Core/qqUploadedFile.php
new file mode 100644
index 00000000..118840a8
--- /dev/null
+++ b/www/lib/FileUpload/Core/qqUploadedFile.php
@@ -0,0 +1,32 @@
+ */
+	private $allowedExtensions = [];
+	/** @var int */
 	private $sizeLimit = 10485760;
+	/** @var null|Core\qqUploadedFileXhr|Core\qqUploadedFileForm */
 	private $file;
+	/** @var string */
 	public $uploadFileName;
+	/** @var string */
 	public $uploadFileExt;
 
-	public function __construct(array $allowedExtensions = array(), $sizeLimit = 10485760)
+	/**
+	 * Undocumented function
+	 *
+	 * @param array $allowedExtensions
+	 * @param integer $sizeLimit
+	 */
+	public function __construct(array $allowedExtensions = [], int $sizeLimit = 10485760)
 	{
 		$allowedExtensions = array_map("strtolower", $allowedExtensions);
 
@@ -22,18 +34,23 @@ class qqFileUploader
 		$this->checkServerSettings();
 
 		if (isset($_GET['qqfile'])) {
-			$this->file = new \FileUpload\Core\qqUploadedFileXhr();
+			$this->file = new Core\qqUploadedFileXhr();
 		} elseif (isset($_FILES['qqfile'])) {
-			$this->file = new \FileUpload\Core\qqUploadedFileForm();
+			$this->file = new Core\qqUploadedFileForm();
 		} else {
-			$this->file = false;
+			$this->file = null;
 		}
 	}
 
-	private function checkServerSettings()
+	/**
+	 * Undocumented function
+	 *
+	 * @return void
+	 */
+	private function checkServerSettings(): void
 	{
-		$postSize = $this->toBytes(ini_get('post_max_size'));
-		$uploadSize = $this->toBytes(ini_get('upload_max_filesize'));
+		$postSize = $this->toBytes(ini_get('post_max_size') ?: '');
+		$uploadSize = $this->toBytes(ini_get('upload_max_filesize') ?: '');
 
 		if ($postSize < $this->sizeLimit || $uploadSize < $this->sizeLimit) {
 			$size = max(1, $this->sizeLimit / 1024 / 1024) . 'M';
@@ -41,10 +58,16 @@ class qqFileUploader
 		}
 	}
 
-	private function toBytes($str)
+	/**
+	 * Undocumented function
+	 *
+	 * @param string $str
+	 * @return integer
+	 */
+	private function toBytes(string $str): int
 	{
 		$val = (int)trim($str);
-		$last = strtolower($str[strlen($str)-1]);
+		$last = strtolower($str[strlen($str) - 1]);
 		switch ($last) {
 			case 'g':
 				$val *= 1024;
@@ -59,36 +82,42 @@ class qqFileUploader
 	}
 
 	/**
-	 * Returns array('success'=>true) or array('error'=>'error message')
+	 * Undocumented function
+	 *
+	 * @param  string  $uploadDirectory
+	 * @param  boolean $replaceOldFile
+	 * @return array Returns ['success'=>true] or
+	 *                                   ['error'=>'error message']
 	 */
-	public function handleUpload($uploadDirectory, $replaceOldFile = false)
+	public function handleUpload(string $uploadDirectory, bool $replaceOldFile = false): array
 	{
 		if (!is_writable($uploadDirectory)) {
-			return array('error' => "Server error. Upload directory isn't writable.");
+			return ['error' => "Server error. Upload directory isn't writable."];
 		}
 
-		if (!$this->file) {
-			return array('error' => 'No files were uploaded.');
+		if (!is_object($this->file)) {
+			return ['error' => 'No files were uploaded.'];
 		}
 
+		$size = 0;
 		$size = $this->file->getSize();
 
 		if ($size == 0) {
-			return array('error' => 'File is empty');
+			return ['error' => 'File is empty'];
 		}
 
 		if ($size > $this->sizeLimit) {
-			return array('error' => 'File is too large');
+			return ['error' => 'File is too large'];
 		}
 
 		$pathinfo = pathinfo($this->file->getName());
-		$filename = $pathinfo['filename'];
+		$filename = $pathinfo['filename'] ?? '';
 		//$filename = md5(uniqid());
 		$ext = $pathinfo['extension'] ?? '';
 
 		if ($this->allowedExtensions && !in_array(strtolower($ext), $this->allowedExtensions)) {
 			$these = implode(', ', $this->allowedExtensions);
-			return array('error' => 'File has an invalid extension, it should be one of '. $these . '.');
+			return ['error' => 'File has an invalid extension, it should be one of ' . $these . '.'];
 		}
 
 		if (!$replaceOldFile) {
@@ -102,10 +131,12 @@ class qqFileUploader
 		$this->uploadFileExt = $ext;
 
 		if ($this->file->save($uploadDirectory . $filename . '.' . $ext)) {
-			return array('success' => true);
+			return ['success' => true];
 		} else {
-			return array('error' => 'Could not save uploaded file.' .
-				'The upload was cancelled, or server error encountered');
+			return [
+				'error' => 'Could not save uploaded file.' .
+				'The upload was cancelled, or server error encountered'
+			];
 		}
 	}
 }
diff --git a/www/lib/Test/Test.php b/www/lib/Test/Test.php
new file mode 100644
index 00000000..8b74b393
--- /dev/null
+++ b/www/lib/Test/Test.php
@@ -0,0 +1,61 @@
+testPrivate();
+		$this->testProtected();
+		$this->testPublic();
+	}
+
+	public function __destruct()
+	{
+		// calls all close tests
+	}
+
+	/**
+	 * Undocumented function
+	 *
+	 * @return string
+	 */
+	protected function testPrivate(): string
+	{
+		$string = 'TEST Private';
+		return $string;
+	}
+
+	/**
+	 * Undocumented function
+	 *
+	 * @return string
+	 */
+	protected function testProtected(): string
+	{
+		$string = 'TEST Protected';
+		return $string;
+	}
+
+	/**
+	 * Undocumented function
+	 *
+	 * @return string
+	 */
+	public function testPublic(): string
+	{
+		$string = 'TEST Public';
+		return $string;
+	}
+}
+
+// __END__