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<?php abstract class Module { private static $mask = '[[[%s]]]'; public static function work($it) { return preg_replace_callback('~\w+~', 'static::replace', $it); } private static function replace($matches) { return sprintf(static::$mask, $matches[0]); } } abstract class Module2 extends Module { private static $mask = '{{{%s}}}'; } echo Module::work('hello world.'), "\n"; echo Module2::work('hello world.');
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Use of "static" in callables is deprecated in /in/cHfqn on line 6 [[[hello]]] [[[world]]]. Deprecated: Use of "static" in callables is deprecated in /in/cHfqn on line 6 Fatal error: Uncaught Error: Cannot access private property Module2::$mask in /in/cHfqn:9 Stack trace: #0 [internal function]: Module::replace(Array) #1 /in/cHfqn(6): preg_replace_callback('~\\w+~', 'static::replace', 'hello world.') #2 /in/cHfqn(19): Module::work('hello world.') #3 {main} thrown in /in/cHfqn on line 9
Process exited with code 255.

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