3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $var = 'test = null'; if(preg_match($var,'/\s{0,2}=\s{0,2}null/gi')) echo "MATCH";
based on 59h7F
Output for 5.5.0 - 7.3.0rc4
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/louFU on line 3