3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('/([0-9]{1,3}\.){3}[0-9]{1,3}', '192.168.1.1'));
Output for 4.3.11 - 7.1.0
Warning: preg_match(): No ending delimiter '/' found in /in/HWS0l on line 2 bool(false)
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '/' found in /in/HWS0l on line 2 bool(false)