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<?php class TH { public function entities(&$val) { $val = htmlentities($val); } } $th = new TH($val); $arr = array('f' => '<pizza>', 'g' => '<onions>'); array_walk($arr, array($th, 'entities')); var_dump($arr);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $val in /in/cIe0I on line 7 array(2) { ["f"]=> string(13) "&lt;pizza&gt;" ["g"]=> string(14) "&lt;onions&gt;" }

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