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<?php abstract class Module { public static function work($it) { return preg_replace_callback('~\w+~', '::replace', $it); } private static function replace($matches) { return sprintf('[[[%s]]]', $matches[0]); } } echo Module::work('hello world.');
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: preg_replace_callback(): Argument #2 ($callback) must be a valid callback, invalid function name in /in/2Aihn:5 Stack trace: #0 /in/2Aihn(5): preg_replace_callback('~\\w+~', '::replace', 'hello world.') #1 /in/2Aihn(11): Module::work('hello world.') #2 {main} thrown in /in/2Aihn on line 5
Process exited with code 255.

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