3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $regex='/^this is a .*pattern$/s/'; preg_match($regex,'string'); ?>
Output for 4.3.11 - 5.6.21, 7.0.0 - 7.1.0
Warning: preg_match(): Unknown modifier '/' in /in/q8BDf on line 3
Output for hhvm-3.10.0 - 3.12.0
Warning: Unknown modifier '/': [/^this is a .*pattern$/s/] in /in/q8BDf on line 3
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '/' in /in/q8BDf on line 3