3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $sting = 'this is great'; $sting = preg_replace('/ /','',$string); echo $string; ?>
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: string in /in/uKUNR on line 3 Notice: Undefined variable: string in /in/uKUNR on line 4
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: string in /in/uKUNR on line 3 Notice: Undefined variable: string in /in/uKUNR on line 4