Online PHP editor | refs for hgrW3

<?php function checkDateTime($dateTime){ $re1='((?:(?:[1]{1}\\d{1}\\d{1}\\d{1})|(?:[2]{1}\\d{3}))[-:\\/.](?:[0]?[1-9]|[1][012])[-:\\/.](?:(?:[0-2]?\\d{1})|(?:[3][01]{1})))(?![\\d])'; $re2='(T)'; $re3='((?:(?:[0-1][0-9])|(?:[2][0-3])|(?:[0-9])):(?:[0-5][0-9])(?::[0-5][0-9])?(?:\\s?(?:am|AM|pm|PM))?)'; if ($c=preg_match_all ("/".$re1.$re2.$re3."/is", $dateTime, $matches)){ return true; } else{ return false; } } $a = checkDateTime("2014-80-26T00:00:00"); var_dump($a);