Update comments for split element counter

Convert functions for date or weekday number to weekday name or date to
weekday number

4dev/database/update/20220617-edit_user_login_user_id_add.sql

@@ -1,5 +1,7 @@
 -- 2022/6/17 update edit_user with login uid
 
+-- !!! COPY TABLE ARRAY FOLDER !!!
+
 -- the login uid, at least 32 chars
 ALTER TABLE edit_user ADD login_user_id VARCHAR UNIQUE;
 -- CREATE UNIQUE INDEX edit_user_login_user_id_key ON edit_user (login_user_id) WHERE login_user_id IS NOT NULL;

4dev/tests/CoreLibsCombinedDateTimeTest.php

@@ -13,7 +13,6 @@ use PHPUnit\Framework\TestCase;
  */
 final class CoreLibsCombinedDateTimeTest extends TestCase
 {
-
 	/**
 	 * timestamps
 	 *
@@ -618,13 +617,169 @@ final class CoreLibsCombinedDateTimeTest extends TestCase
 	 * @param array $expected
 	 * @return void
 	 */
-	public function testCalcDaysInterval(string $input_a, string $input_b, bool $flag, $expected): void
+	public function testCalcDaysInterval(
-	{
+		string $input_a,
+		string $input_b,
+		bool $flag,
+		$expected
+	): void {
 		$this->assertEquals(
 			$expected,
 			\CoreLibs\Combined\DateTime::calcDaysInterval($input_a, $input_b, $flag)
 		);
 	}
+
+	/**
+	 * Undocumented function
+	 *
+	 * @return array
+	 */
+	public function weekdayNumberProvider(): array
+	{
+		return [
+			'0 invalid' => [0, null, 'Inv',],
+			'0 invalid long' => [0, true, 'Invalid',],
+			'1 short' => [1, null, 'Mon',],
+			'1 long' => [1, true, 'Monday',],
+			'2 short' => [2, null, 'Tue',],
+			'2 long' => [2, true, 'Tuesday',],
+			'3 short' => [3, null, 'Wed',],
+			'3 long' => [3, true, 'Wednesday',],
+			'4 short' => [4, null, 'Thu',],
+			'4 long' => [4, true, 'Thursday',],
+			'5 short' => [5, null, 'Fri',],
+			'5 long' => [5, true, 'Friday',],
+			'6 short' => [6, null, 'Sat',],
+			'6 long' => [6, true, 'Saturday',],
+			'7 short' => [7, null, 'Sun',],
+			'7 long' => [7, true, 'Sunday',],
+			'8 invalid' => [8, null, 'Inv',],
+			'8 invalid long' => [8, true, 'Invalid',],
+		];
+	}
+
+	/**
+	 * int weekday number to string weekday
+	 *
+	 * @covers ::setWeekdayNameFromIsoDow
+	 * @dataProvider weekdayNumberProvider
+	 * @testdox weekdayListProvider $input (short $flag) will be $expected [$_dataName]
+	 *
+	 * @param  int       $input
+	 * @param  bool|null $flag
+	 * @param  string    $expected
+	 * @return void
+	 */
+	public function testSetWeekdayNameFromIsoDow(
+		int $input,
+		?bool $flag,
+		string $expected
+	): void {
+		if ($flag === null) {
+			$output = \CoreLibs\Combined\DateTime::setWeekdayNameFromIsoDow($input);
+		} else {
+			$output = \CoreLibs\Combined\DateTime::setWeekdayNameFromIsoDow($input, $flag);
+		}
+		$this->assertEquals(
+			$expected,
+			$output
+		);
+	}
+
+	/**
+	 * Undocumented function
+	 *
+	 * @return array
+	 */
+	public function weekdayDateProvider(): array
+	{
+		return [
+			'invalid date' => ['2022-02-31', -1],
+			'1: monday' => ['2022-07-25', 1],
+			'2: tuesday' => ['2022-07-26', 2],
+			'3: wednesday' => ['2022-07-27', 3],
+			'4: thursday' => ['2022-07-28', 4],
+			'5: friday' => ['2022-07-29', 5],
+			'6: saturday' => ['2022-07-30', 6],
+			'7: sunday' => ['2022-07-31', 7],
+		];
+	}
+
+	/**
+	 * date to weekday number
+	 *
+	 * @covers ::setWeekdayNumberFromDate
+	 * @dataProvider weekdayDateProvider
+	 * @testdox setWeekdayNumberFromDate $input will be $expected [$_dataName]
+	 *
+	 * @param  string $input
+	 * @param  int    $expected
+	 * @return void
+	 */
+	public function testSetWeekdayNumberFromDate(
+		string $input,
+		int $expected
+	): void {
+		$this->assertEquals(
+			$expected,
+			\CoreLibs\Combined\DateTime::setWeekdayNumberFromDate($input)
+		);
+	}
+
+	/**
+	 * Undocumented function
+	 *
+	 * @return array
+	 */
+	public function weekdayDateNameProvider(): array
+	{
+		return [
+			'invalid date short' => ['2022-02-31', null, 'Inv'],
+			'invalid date long' => ['2022-02-31', true, 'Invalid'],
+			'Mon short' => ['2022-07-25', null, 'Mon'],
+			'Monday long' => ['2022-07-25', true, 'Monday'],
+			'Tue short' => ['2022-07-26', null, 'Tue'],
+			'Tuesday long' => ['2022-07-26', true, 'Tuesday'],
+			'Wed short' => ['2022-07-27', null, 'Wed'],
+			'Wednesday long' => ['2022-07-27', true, 'Wednesday'],
+			'Thu short' => ['2022-07-28', null, 'Thu'],
+			'Thursday long' => ['2022-07-28', true, 'Thursday'],
+			'Fri short' => ['2022-07-29', null, 'Fri'],
+			'Friday long' => ['2022-07-29', true, 'Friday'],
+			'Sat short' => ['2022-07-30', null, 'Sat'],
+			'Saturday long' => ['2022-07-30', true, 'Saturday'],
+			'Sun short' => ['2022-07-31', null, 'Sun'],
+			'Sunday long' => ['2022-07-31', true, 'Sunday'],
+		];
+	}
+
+	/**
+	 * date to weekday name
+	 *
+	 * @covers ::setWeekdayNameFromDate
+	 * @dataProvider weekdayDateNameProvider
+	 * @testdox setWeekdayNameFromDate $input (short $flag) will be $expected [$_dataName]
+	 *
+	 * @param  string $input
+	 * @param  bool|null $flag
+	 * @param  string $expected
+	 * @return void
+	 */
+	public function testSetWeekdayNameFromDate(
+		string $input,
+		?bool $flag,
+		string $expected
+	): void {
+		if ($flag === null) {
+			$output = \CoreLibs\Combined\DateTime::setWeekdayNameFromDate($input);
+		} else {
+			$output = \CoreLibs\Combined\DateTime::setWeekdayNameFromDate($input, $flag);
+		}
+		$this->assertEquals(
+			$expected,
+			$output
+		);
+	}
 }
 
 // __END__

4dev/tests/CoreLibsConvertStringsTest.php

@@ -0,0 +1,261 @@
+<?php // phpcs:disable Generic.Files.LineLength
+
+declare(strict_types=1);
+
+namespace tests;
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Test class for Convert\Strings
+ * @coversDefaultClass \CoreLibs\Convert\Strings
+ * @testdox \CoreLibs\Convert\Strings method tests
+ */
+final class CoreLibsConvertStringsTest extends TestCase
+{
+	/**
+	 * Undocumented function
+	 *
+	 * @return array
+	 */
+	public function splitFormatStringProvider(): array
+	{
+		// 0: input
+		// 1: format
+		// 2: split characters as string, null for default
+		// 3: expected
+		return [
+			'all empty string' => [
+				'',
+				'',
+				null,
+				''
+			],
+			'empty input string' => [
+				'',
+				'2-2',
+				null,
+				''
+			],
+			'empty format string string' => [
+				'1234',
+				'',
+				null,
+				'1234'
+			],
+			'string format match' => [
+				'1234',
+				'2-2',
+				null,
+				'12-34'
+			],
+			'string format trailing match' => [
+				'1234',
+				'2-2-',
+				null,
+				'12-34'
+			],
+			'string format leading match' => [
+				'1234',
+				'-2-2',
+				null,
+				'12-34'
+			],
+			'string format double inside match' => [
+				'1234',
+				'2--2',
+				null,
+				'12--34',
+			],
+			'string format short first' => [
+				'1',
+				'2-2',
+				null,
+				'1'
+			],
+			'string format match first' => [
+				'12',
+				'2-2',
+				null,
+				'12'
+			],
+			'string format short second' => [
+				'123',
+				'2-2',
+				null,
+				'12-3'
+			],
+			'string format too long' => [
+				'1234567',
+				'2-2',
+				null,
+				'12-34-567'
+			],
+			'string format invalid format string' => [
+				'1234',
+				'2_2',
+				null,
+				'1234'
+			],
+			'different split character' => [
+				'1234',
+				'2_2',
+				'_',
+				'12_34'
+			],
+			'mixed split characters' => [
+				'123456',
+				'2-2_2',
+				'-_',
+				'12-34_56'
+			],
+			'length mixed' => [
+				'ABCD12345568ABC13',
+				'2-4_5-2#4',
+				'-_#',
+				'AB-CD12_34556-8A#BC13'
+			],
+			'split with split chars in string' => [
+				'12-34',
+				'2-2',
+				null,
+				'12--3-4'
+			],
+			'mutltibyte string' => [
+				'あいうえ',
+				'2-2',
+				null,
+				'あいうえ'
+			],
+			'mutltibyte split string' => [
+				'1234',
+				'２-２',
+				null,
+				'1234'
+			],
+		];
+	}
+
+	/**
+	 * split format string
+	 *
+	 * @covers ::splitFormatString
+	 * @dataProvider splitFormatStringProvider
+	 * @testdox splitFormatString $input with format $format and splitters $split_characters will be $expected [$_dataName]
+	 *
+	 * @param  string      $input
+	 * @param  string      $format
+	 * @param  string|null $split_characters
+	 * @param  string      $expected
+	 * @return void
+	 */
+	public function testSplitFormatString(
+		string $input,
+		string $format,
+		?string $split_characters,
+		string $expected
+	): void {
+		if ($split_characters === null) {
+			$output = \CoreLibs\Convert\Strings::splitFormatString(
+				$input,
+				$format
+			);
+		} else {
+			$output = \CoreLibs\Convert\Strings::splitFormatString(
+				$input,
+				$format,
+				$split_characters
+			);
+		}
+		$this->assertEquals(
+			$expected,
+			$output
+		);
+	}
+
+	/**
+	 * Undocumented function
+	 *
+	 * @return array
+	 */
+	public function countSplitPartsProvider(): array
+	{
+		return [
+			'0 elements' => [
+				'',
+				null,
+				0
+			],
+			'1 element' => [
+				'1',
+				null,
+				1,
+			],
+			'2 elements, trailing' => [
+				'1-2-',
+				null,
+				2
+			],
+			'2 elements, leading' => [
+				'-1-2',
+				null,
+				2
+			],
+			'2 elements, midde double' => [
+				'1--2',
+				null,
+				2
+			],
+			'4 elements' => [
+				'1-2-3-4',
+				null,
+				4
+			],
+			'3 elemenst, other splitter' => [
+				'2-3_3',
+				'-_',
+				3
+			],
+			'illegal splitter' => [
+				'あsdf',
+				null,
+				0
+			]
+		];
+	}
+
+	/**
+	 * count split parts
+	 *
+	 * @covers ::countSplitParts
+	 * @dataProvider countSplitPartsProvider
+	 * @testdox countSplitParts $input with splitters $split_characters will be $expected [$_dataName]
+	 *
+	 * @param  string      $input
+	 * @param  string|null $split_characters
+	 * @param  int         $expected
+	 * @return void
+	 */
+	public function testCountSplitParts(
+		string $input,
+		?string $split_characters,
+		int $expected
+	): void {
+		if ($split_characters === null) {
+			$output = \CoreLibs\Convert\Strings::countSplitParts(
+				$input
+			);
+		} else {
+			$output = \CoreLibs\Convert\Strings::countSplitParts(
+				$input,
+				$split_characters
+			);
+		}
+		$this->assertEquals(
+			$expected,
+			$output
+		);
+	}
+}
+
+// __END__

www/admin/class_test.datetime.php

@@ -139,6 +139,22 @@ foreach ($compare_dates as $compare_date) {
 		. DgS::printAr(DateTime::calcDaysInterval($compare_date[0], $compare_date[1], true)) . "<br>";
 }
 
+// test date conversion
+$dow = 2;
+print "DOW[$dow]: " . DateTime::setWeekdayNameFromIsoDow($dow) . "<br>";
+print "DOW[$dow],long: " . DateTime::setWeekdayNameFromIsoDow($dow, true) . "<br>";
+$date = '2022-7-22';
+print "DATE-dow[$date]: " . DateTime::setWeekdayNameFromDate($date) . "<br>";
+print "DATE-dow[$date],long: " . DateTime::setWeekdayNameFromDate($date, true) . "<br>";
+print "DOW-date[$date]: " . DateTime::setWeekdayNumberFromDate($date) . "<br>";
+$dow = 11;
+print "DOW[$dow];invalid: " . DateTime::setWeekdayNameFromIsoDow($dow) . "<br>";
+print "DOW[$dow],long;invalid: " . DateTime::setWeekdayNameFromIsoDow($dow, true) . "<br>";
+$date = '2022-70-242';
+print "DATE-dow[$date];invalid: " . DateTime::setWeekdayNameFromDate($date) . "<br>";
+print "DATE-dow[$date],long;invalid: " . DateTime::setWeekdayNameFromDate($date, true) . "<br>";
+print "DOW-date[$date];invalid: " . DateTime::setWeekdayNumberFromDate($date) . "<br>";
+
 // error message
 print $log->printErrorMsg();
 

www/admin/class_test.php

@@ -70,6 +70,7 @@ print '<div><a href="class_test.hash.php">Class Test: HASH</a></div>';
 print '<div><a href="class_test.encoding.php">Class Test: ENCODING (CHECK/CONVERT/MIME)</a></div>';
 print '<div><a href="class_test.image.php">Class Test: IMAGE</a></div>';
 print '<div><a href="class_test.byte.php">Class Test: BYTE CONVERT</a></div>';
+print '<div><a href="class_test.strings.php">Class Test: STRING CONVERT</a></div>';
 print '<div><a href="class_test.datetime.php">Class Test: DATE/TIME</a></div>';
 print '<div><a href="class_test.array.php">Class Test: ARRAY HANDLER</a></div>';
 print '<div><a href="class_test.file.php">Class Test: FILE</a></div>';

www/admin/class_test.strings.php

@@ -0,0 +1,86 @@
+<?php // phpcs:ignore warning
+
+declare(strict_types=1);
+
+$DEBUG_ALL_OVERRIDE = 0; // set to 1 to debug on live/remote server locations
+$DEBUG_ALL = 1;
+$PRINT_ALL = 1;
+$DB_DEBUG = 1;
+
+if ($DEBUG_ALL) {
+	error_reporting(E_ALL | E_STRICT | E_ERROR | E_WARNING | E_PARSE | E_COMPILE_ERROR);
+}
+
+ob_start();
+
+// basic class test file
+define('USE_DATABASE', false);
+// sample config
+require 'config.php';
+// define log file id
+$LOG_FILE_ID = 'classTest-string';
+ob_end_flush();
+
+$log = new CoreLibs\Debug\Logging([
+	'log_folder' => BASE . LOG,
+	'file_id' => $LOG_FILE_ID,
+	// add file date
+	'print_file_date' => true,
+	// set debug and print flags
+	'debug_all' => $DEBUG_ALL ?? false,
+	'echo_all' => $ECHO_ALL ?? false,
+	'print_all' => $PRINT_ALL ?? false,
+]);
+$byte_class = 'CoreLibs\Convert\Strings';
+
+$PAGE_NAME = 'TEST CLASS: STRINGS CONVERT';
+print "<!DOCTYPE html>";
+print "<html><head><title>" . $PAGE_NAME . "</title><head>";
+print "<body>";
+print '<div><a href="class_test.php">Class Test Master</a></div>';
+print '<div><h1>' . $PAGE_NAME . '</h1></div>';
+
+$split = '4-4-4';
+$test_strings = [
+	'13',
+	'1234',
+	'12341',
+	'12341234',
+	'123412341',
+	'123412341234',
+	'1234123412341234512345',
+];
+
+foreach ($test_strings as $string) {
+	print "Convert: $string with $split to: "
+		. \CoreLibs\Convert\Strings::splitFormatString($string, $split)
+		. "<br>";
+}
+
+$split = '2_2';
+$string = '1234';
+print "Convert: $string with $split to: "
+	. \CoreLibs\Convert\Strings::splitFormatString($string, $split)
+	. "<br>";
+$split = '2-2';
+$string = 'あいうえ';
+print "Convert: $string with $split to: "
+	. \CoreLibs\Convert\Strings::splitFormatString($string, $split)
+	. "<br>";
+
+$test_splits = [
+	'',
+	'2',
+	'2-2',
+	'2-3-4',
+];
+foreach ($test_splits as $split) {
+	print "$split with count: " . \CoreLibs\Convert\Strings::countSplitParts($split) . "<br>";
+}
+
+// error message
+print $log->printErrorMsg();
+
+print "</body></html>";
+
+// __END__

www/includes/admin_footer.php

@@ -2,9 +2,9 @@
 
 /********************************************************************
 * AUTHOR: Clemens Schwaighofer
-* CREATED: 2008/08/14
+* CREATED:
 * SHORT DESCRIPTION:
-* URL redirect header
+*
 * HISTORY:
 *********************************************************************/
 

www/includes/admin_header.php

@@ -2,8 +2,9 @@
 
 /********************************************************************
 * AUTHOR: Clemens Schwaighofer
-* CREATED: 2008/08/01
+* CREATED:
 * SHORT DESCRIPTION:
+*
 * HISTORY:
 *********************************************************************/
 

www/layout/admin/javascript/edit.jq.js

@@ -14,9 +14,9 @@ if (!DEBUG) {
 	});
 }*/
 
-// open overlay boxes counter
+// open overlay boxes counter for z-index
-var GL_OB_S = 30;
+var GL_OB_S = 100;
-var GL_OB_BASE = 30;
+var GL_OB_BASE = 100;
 
 /**
  * opens a popup window with winName and given features (string)

www/lib/CoreLibs/ACL/Login.php

@@ -1287,6 +1287,7 @@ class Login
 					. $strings['PASSWORD_CHANGE_BUTTON_VALUE']
 					. '" OnClick="ShowHideDiv(\'pw_change_div\');">'
 			]);
+			// TODO: submit or JS to set target page as ajax call
 			// NOTE: for the HTML block I ignore line lengths
 			// phpcs:disable
 			$this->login_template['password_change'] = <<<EOM
@@ -1329,9 +1330,11 @@ EOM;
 		}
 
 		// now check templates
+		// TODO: submit or JS to set target page as ajax call
 		if (!$this->login_template['template']) {
 			$this->login_template['template'] = <<<EOM
-<html>
+<!DOCTYPE html>
+<html lang="en">
 <head>
 <title>{HTML_TITLE}</title>
 <style type="text/css">
@@ -1485,7 +1488,6 @@ EOM;
 		}
 		// initial the session if there is no session running already
 		// check if session exists and could be created
-		// TODO: move session creation and check to outside?
 		if ($this->session->checkActiveSession() === false) {
 			$this->login_error = 2;
 			echo '<b>No active session found</b>';

www/lib/CoreLibs/Check/Jason.php

@@ -1,7 +1,7 @@
 <?php
 
 /*
- * DEPRECATED: Use correct Json:: instead
+ * DEPRECATED: Use correct Convert\Json:: instead
  */
 
 declare(strict_types=1);

www/lib/CoreLibs/Combined/ArrayHandler.php

@@ -1,7 +1,7 @@
 <?php
 
 /*
- * html convert functions
+ * array search and transform functions
  */
 
 declare(strict_types=1);

www/lib/CoreLibs/Combined/DateTime.php

@@ -1,7 +1,7 @@
 <?php
 
 /*
- * image thumbnail, rotate, etc
+ * date convert and check functions
  */
 
 declare(strict_types=1);
@@ -193,6 +193,54 @@ class DateTime
 		}
 	}
 
+	/**
+	 * Returns long or short day of week name based on ISO day of week number
+	 * 1: Monday
+	 * ...
+	 * 7: Sunday
+	 *
+	 * @param  int    $isodow 1: Monday, 7: Sunday
+	 * @param  bool   $long   Default false 'Mon', if true 'Monday'
+	 * @return string         Day of week string either short 'Mon' or long 'Monday'
+	 */
+	public static function setWeekdayNameFromIsoDow(int $isodow, bool $long = false): string
+	{
+		// if not valid, set to invalid
+		if ($isodow < 1 || $isodow > 7) {
+			return $long ? 'Invalid' : 'Inv';
+		}
+		return date($long ? 'l' : 'D', strtotime("Sunday +{$isodow} days") ?: null);
+	}
+
+	/**
+	 * Get the day of week Name from date
+	 *
+	 * @param  string $date Any valid date
+	 * @param  bool   $long Default false 'Mon', if true 'Monday'
+	 * @return string       Day of week string either short 'Mon' or long 'Monday'
+	 */
+	public static function setWeekdayNameFromDate(string $date, bool $long = false): string
+	{
+		if (!self::checkDate($date)) {
+			return $long ? 'Invalid' : 'Inv';
+		}
+		return date($long ? 'l' : 'D', strtotime($date) ?: null);
+	}
+
+	/**
+	 * Get the day of week Name from date
+	 *
+	 * @param  string $date  Any valid date
+	 * @return int           ISO Weekday number 1: Monday, 7: Sunday, -1 for invalid date
+	 */
+	public static function setWeekdayNumberFromDate(string $date): int
+	{
+		if (!self::checkDate($date)) {
+			return -1;
+		}
+		return (int)date('N', strtotime($date) ?: null);
+	}
+
 	/**
 	 * splits & checks date, wrap around for check_date function
 	 *

www/lib/CoreLibs/Convert/Byte.php

@@ -1,7 +1,7 @@
 <?php
 
 /*
- * image thumbnail, rotate, etc
+ * byte conversion from and to human readable
  */
 
 declare(strict_types=1);

www/lib/CoreLibs/Convert/Encoding.php

@@ -1,7 +1,7 @@
 <?php
 
 /*
- * check if string is valid in target encoding
+ * convert string frmo one encdoing to another with auto detect flags
  */
 
 declare(strict_types=1);

www/lib/CoreLibs/Convert/Strings.php

@@ -0,0 +1,123 @@
+<?php
+
+/*
+ * string convert and transform functions
+ */
+
+declare(strict_types=1);
+
+namespace CoreLibs\Convert;
+
+class Strings
+{
+	/**
+	 * return the number of elements in the split list
+	 * 0 if nothing / invalid split
+	 * 1 if no split character found
+	 * n for the numbers in the split list
+	 *
+	 * @param  string $split_format
+	 * @param  string $split_characters
+	 * @return int
+	 */
+	public static function countSplitParts(
+		string $split_format,
+		string $split_characters = '-'
+	): int {
+		if (
+			empty($split_format) ||
+			// non valid characters inside, abort
+			!preg_match("/^[0-9" . $split_characters . "]/", $split_format) ||
+			preg_match('/[^\x20-\x7e]/', $split_characters)
+		) {
+			return 0;
+		}
+		$split_list = preg_split(
+			// allowed split characters
+			"/([" . $split_characters . "]{1})/",
+			$split_format
+		);
+		if (!is_array($split_list)) {
+			return 0;
+		}
+		return count(array_filter($split_list));
+	}
+
+	/**
+	 * split format a string base on a split format string
+	 * split format string is eg
+	 * 4-4-4 that means 4 characters DASH 4 characters DASH 4 characters
+	 * So a string in the format of
+	 * ABCD1234EFGH will be ABCD-1234-EFGH
+	 * Note a string LONGER then the maxium will be attached with the LAST
+	 * split character. In above exmaple
+	 * ABCD1234EFGHTOOLONG will be ABCD-1234-EFGH-TOOLONG
+	 *
+	 * @param  string $value            string value to split
+	 * @param  string $split_format     split format
+	 * @param  string $split_characters list of charcters with which we split
+	 *                                  if not set uses dash ('-')
+	 * @return string                   split formatted string or original value if not chnaged
+	 */
+	public static function splitFormatString(
+		string $value,
+		string $split_format,
+		string $split_characters = '-'
+	): string {
+		if (
+			// abort if split format is empty
+			empty($split_format) ||
+			// if not in the valid ASCII character range for any of the strings
+			preg_match('/[^\x20-\x7e]/', $value) ||
+			// preg_match('/[^\x20-\x7e]/', $split_format) ||
+			preg_match('/[^\x20-\x7e]/', $split_characters) ||
+			// only numbers and split characters in split_format
+			!preg_match("/[0-9" . $split_characters . "]/", $split_format)
+		) {
+			return $value;
+		}
+		// split format list
+		$split_list = preg_split(
+			// allowed split characters
+			"/([" . $split_characters . "]{1})/",
+			$split_format,
+			-1,
+			PREG_SPLIT_DELIM_CAPTURE
+		);
+		// if this is false, or only one array, abort split
+		if (!is_array($split_list) || count($split_list) == 1) {
+			return $value;
+		}
+		$out = '';
+		$pos = 0;
+		$last_split = '';
+		foreach ($split_list as $offset) {
+			if (is_numeric($offset)) {
+				$_part = substr($value, $pos, (int)$offset);
+				if (empty($_part)) {
+					break;
+				}
+				$out .= $_part;
+				$pos += (int)$offset;
+			} elseif ($pos) { // if first, do not add
+				$out .= $offset;
+				$last_split = $offset;
+			}
+		}
+		if (!empty($out) && $pos < strlen($value)) {
+			$out .= $last_split . substr($value, $pos);
+		}
+		// if last is not alphanumeric remove, remove
+		if (!strcspn(substr($out, -1, 1), $split_characters)) {
+			$out = substr($out, 0, -1);
+		}
+		// overwrite only if out is set
+		if (!empty($out)) {
+			return $out;
+		} else {
+			return $value;
+		}
+	}
+}
+
+// __END__

www/lib/CoreLibs/Create/Email.php

@@ -24,7 +24,7 @@ class Email
 		'JIS',
 		'JIS-ms',
 	];
-	/** @var string, normaly this does not need to be changed */
+	/** @var string normaly this does not need to be changed */
 	private static $mb_convert_kana_mode = 'KV';
 
 	/**
@@ -36,7 +36,7 @@ class Email
 	 * @param  string $email      E-Mail address
 	 * @param  string $email_name Name for the email address, in UTF-8, if not set, empty
 	 * @param  string $encoding   Encoding, if not set UTF-8
-	 * @param  bool   $kv_fodling If set to true and a valid encoding, do KV folding
+	 * @param  bool   $kv_folding If set to true and a valid encoding, do KV folding
 	 * @return string             Correctly encoded and build email string
 	 */
 	public static function encodeEmailName(
@@ -75,7 +75,7 @@ class Email
 	 * @param  string               $body       Body string, in UTF-8
 	 * @param  array<string,string> $replace    Replace the array as key -> value, in UTF-8
 	 * @param  string               $encoding   Encoding for subject encode mime header
-	 * @param  bool                 $kv_fodling If set to true and a valid encoding,
+	 * @param  bool                 $kv_folding If set to true and a valid encoding,
 	 *                                          do KV folding
 	 * @return array<string>                    Pos 0: Subject, Pos 1: Body
 	 */

www/lib/CoreLibs/Create/RandomKey.php

@@ -1,7 +1,7 @@
 <?php
 
 /*
- * html convert functions
+ * random key functions
  */
 
 declare(strict_types=1);

www/vendor/composer/autoload_classmap.php

@@ -27,6 +27,7 @@ return array(
     'CoreLibs\\Convert\\Math' => $baseDir . '/lib/CoreLibs/Convert/Math.php',
     'CoreLibs\\Convert\\MimeAppName' => $baseDir . '/lib/CoreLibs/Convert/MimeAppName.php',
     'CoreLibs\\Convert\\MimeEncode' => $baseDir . '/lib/CoreLibs/Convert/MimeEncode.php',
+    'CoreLibs\\Convert\\Strings' => $baseDir . '/lib/CoreLibs/Convert/Strings.php',
     'CoreLibs\\Create\\Email' => $baseDir . '/lib/CoreLibs/Create/Email.php',
     'CoreLibs\\Create\\Hash' => $baseDir . '/lib/CoreLibs/Create/Hash.php',
     'CoreLibs\\Create\\RandomKey' => $baseDir . '/lib/CoreLibs/Create/RandomKey.php',

www/vendor/composer/autoload_static.php

@@ -92,6 +92,7 @@ class ComposerStaticInit10fe8fe2ec4017b8644d2b64bcf398b9
         'CoreLibs\\Convert\\Math' => __DIR__ . '/../..' . '/lib/CoreLibs/Convert/Math.php',
         'CoreLibs\\Convert\\MimeAppName' => __DIR__ . '/../..' . '/lib/CoreLibs/Convert/MimeAppName.php',
         'CoreLibs\\Convert\\MimeEncode' => __DIR__ . '/../..' . '/lib/CoreLibs/Convert/MimeEncode.php',
+        'CoreLibs\\Convert\\Strings' => __DIR__ . '/../..' . '/lib/CoreLibs/Convert/Strings.php',
         'CoreLibs\\Create\\Email' => __DIR__ . '/../..' . '/lib/CoreLibs/Create/Email.php',
         'CoreLibs\\Create\\Hash' => __DIR__ . '/../..' . '/lib/CoreLibs/Create/Hash.php',
         'CoreLibs\\Create\\RandomKey' => __DIR__ . '/../..' . '/lib/CoreLibs/Create/RandomKey.php',