3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class Foo { function __construct() { echo 'a'; $this->Foo(); } function Foo() { echo 'b'; } } new Foo();
based on UsEFJ
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0rc4
ab