3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php preg_match( '/d', '222', $matches); echo $matches[1]; // 1234
Output for 5.2.0 - 7.2.6
Warning: preg_match(): No ending delimiter '/' found in /in/7pv6E on line 2
Output for 4.3.11 - 5.0.5, 5.1.1 - 5.1.6
Warning: preg_match(): No ending delimiter '/' found in /in/7pv6E on line 2 Notice: Undefined offset: 1 in /in/7pv6E on line 3
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/7pv6E on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '/' found in /in/7pv6E on line 2 Notice: Undefined offset: 1 in /in/7pv6E on line 3