3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $value = '2010-05-29 15:54:25'; $pattern = '(\d{4}-\d{2}-\d{2}( \d{2})?(:\d{2})?(:\d{2})?)'; var_dump(preg_match($pattern, $value));
Output for 4.3.0 - 7.2.0
int(1)