3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('/[/]/', "/"));
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Unknown modifier ']' in /in/0loei on line 2 bool(false)
Output for hhvm-3.10.0 - 3.12.0
Warning: Unknown modifier ']': [/[/]/] in /in/0loei on line 2 bool(false)
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier ']' in /in/0loei on line 2 bool(false)