3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?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';
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0