First phpstan strict check

www/lib/CoreLibs/ACL/Login.php

@@ -1048,7 +1048,7 @@ class Login
 				$res = $this->db->dbReturnRow($q);
 				if (
 					!is_array($res) ||
-					(is_array($res) && empty($res['edit_user_id']))
+					empty($res['edit_user_id'])
 				) {
 					// username wrong
 					$this->login_error = 201;
@@ -1068,9 +1068,11 @@ class Login
 				}
 				if (
 					!is_array($res) ||
-					(is_array($res) &&
-					(empty($res['edit_user_id']) ||
-					!$this->loginPasswordCheck($res['old_password_hash'], $this->pw_old_password)))
+					empty($res['edit_user_id']) ||
+					!$this->loginPasswordCheck(
+						$res['old_password_hash'],
+						$this->pw_old_password
+					)
 				) {
 					// old password wrong
 					$this->login_error = 202;
@@ -1794,7 +1796,6 @@ EOM;
 		// check that numeric, positive numeric, not longer than max input string lenght
 		// and not short than min password length
 		if (
-			is_numeric($length) &&
 			$length >= $this->password_min_length_max &&
 			$length <= $this->password_max_length &&
 			$length <= 255

www/lib/CoreLibs/Basic.php

@@ -672,9 +672,6 @@ class Basic
 	public static function arrayToString(array $array, string $connect_char): string
 	{
 		trigger_error('Method ' . __METHOD__ . ' is deprecated, use join()', E_USER_DEPRECATED);
-		if (!is_array($array)) {
-			$array = [];
-		}
 		return join($connect_char, $array);
 	}
 

www/lib/CoreLibs/Create/Session.php

@@ -341,6 +341,7 @@ class Session
 		if (isset($_SESSION[$name])) {
 			return $_SESSION[$name];
 		}
+		return [];
 	}
 
 	/**