3v4l.org

run code in 300+ PHP versions simultaneously
<?php $value = '2010-05-29'; $pattern = '(\d{4}(-\d{2})?(-\d{2})?( \d{2})?(:\d{2})?(:\d{2})?)'; var_dump(preg_match($pattern, $value));

preferences:
29.38 ms | 402 KiB | 5 Q