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<?php $array = array("1","2","3"); $only_integers === array_filter($array,'is_numeric'); // true var_dump($only_integers);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $only_integers in /in/jqrYE on line 3 Warning: Undefined variable $only_integers in /in/jqrYE on line 5 NULL

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