3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = substr('abcdef', 0, -2); $y = substr($x, 0, -2);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0