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run code in 150+ php & hhvm versions
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<?php abstract class Module { public static function work($it) { return preg_replace_callback('~\w+~', 'static::replace', $it); } private static function replace($matches) { return sprintf('[[[%s]]]', $matches[0]); } } echo Module::work('hello world.');
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
[[[hello]]] [[[world]]].
Output for 5.2.0 - 5.2.17
Warning: preg_replace_callback(): Requires argument 2, 'static::replace', to be a valid callback in /in/R3UDQ on line 5 hello world.
Output for 5.0.0 - 5.1.6
Warning: preg_replace_callback(): requires argument 2, 'static::replace', to be a valid callback in /in/R3UDQ on line 5 hello world.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CLASS in /in/R3UDQ on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_CLASS in /in/R3UDQ on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/R3UDQ on line 2
Process exited with code 255.