3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match("([01]?[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?",'10:59'));
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Unknown modifier ':' in /in/Imna5 on line 2 bool(false)
Output for hhvm-3.10.0 - 3.12.0
Warning: Unknown modifier ':': [([01]?[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?] in /in/Imna5 on line 2 bool(false)
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier ':' in /in/Imna5 on line 2 bool(false)