3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class str {function __toString(){return "9";}} echo (int) method_exists('str', '__toString');
based on r9KfW
Output for 5.1.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
1
Output for 4.3.0 - 5.0.5
0