3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = str_repeat('x',pow(2,1)); $string .= str_repeat('x', pow(2,1));
Output for 5.2.11 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0