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<?php class Security { public static function safeString(&$string){ $string = htmlspecialchars(strip_tags($string)); } public static function safeArray(&$array){ return array_walk_recursive($array, 'safeString'); } } echo Security::safeString('<br>');
Output for 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Security::safeString(): Argument #1 ($string) could not be passed by reference in /in/F6cpO:12 Stack trace: #0 {main} thrown in /in/F6cpO on line 12
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Fatal error: Uncaught Error: Security::safeString(): Argument #1 ($string) cannot be passed by reference in /in/F6cpO:12 Stack trace: #0 {main} thrown in /in/F6cpO on line 12
Process exited with code 255.
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Only variables can be passed by reference in /in/F6cpO on line 12
Process exited with code 255.
Output for 7.0.0 - 7.0.20
Fatal error: Uncaught Error: Cannot pass parameter 1 by reference in /in/F6cpO:12 Stack trace: #0 {main} thrown in /in/F6cpO on line 12
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Fatal error: Cannot pass parameter 1 by reference in /in/F6cpO on line 12
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/F6cpO on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/F6cpO on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/F6cpO on line 3
Process exited with code 255.

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