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<?php function validateDate($date, $format = 'Y-m-d H:i:s') { $d = DateTime::createFromFormat($format, $date); return $d && $d->format($format) == $date; } print (is_date('10/12/2015'));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function is_date() in /in/FKbAF:9 Stack trace: #0 {main} thrown in /in/FKbAF on line 9
Process exited with code 255.

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