3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump("\200" === "\600");
based on 8eB9k
Output for 7.1.0 - 7.3.0beta1
Warning: Octal escape sequence overflow \600 is greater than \377 in /in/CQYVF on line 2 bool(true)
Output for 5.6.0 - 7.0.20
bool(true)