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<?php function validateDate($date, $format = 'Y-m-d') { $d = DateTime::createFromFormat($format, $date); return $d && $d->format($format) == $date; } var_dump(validateDate('08/01/2014', 'm/d/YYYY'));
Output for git.master, git.master_jit, rfc.property-hooks
bool(false)

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