3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $matches = null; preg_match('/^(\d{1,2}([a-z]+)) (?:s*)S+ (200[0-9])/', '21st March 2006', $matches); var_dump($matches);
Output for 4.3.0 - 7.1.7, 7.2.0
array(0) { }
Output for 7.1.10

Process exited with code 137.