3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $subject = "Hello,hello2 world"; $pattern = ' |,|\)|\(|\;|\.'; preg_match_all($pattern, $subject, $matches, PREG_SET_ORDER); print_r($matches);
Output for 5.2.0 - 7.2.0
Warning: preg_match_all(): Unknown modifier '\' in /in/v5jXI on line 4
Output for 4.3.11 - 5.1.6
Warning: preg_match_all(): Unknown modifier '\' in /in/v5jXI on line 4 Array ( )
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '\' in /in/v5jXI on line 4 Array ( )