3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_match('(Hello World)', 'Lorem'); preg_match('Hello World', 'Lorem');
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/2GQVG on line 5
Output for 4.3.0 - 4.3.10, hhvm-3.10.0 - 3.12.0
Warning: Delimiter must not be alphanumeric or backslash in /in/2GQVG on line 5