3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input_date = '1912-12-22'; if(!preg_match("[0-9]{4}-(0[1-9]|1[012])-(0[1-9]|1[0-9]|2[0-9]|3[01])",$input_date, $aux_date)) echo 'match';

preferences:
32.25 ms | 402 KiB | 5 Q