3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $var = ' Hello World'; //x4 spaces echo preg_replace("//m {2}/","\t",$var);
Output for 4.3.11 - 7.1.0
Warning: preg_replace(): Unknown modifier '{' in /in/63PQt on line 3
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '{' in /in/63PQt on line 3