3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class a { private $i = 0; public function __construct() { return ++$this->i; } } echo (new a)->__construct();
based on PJtDW
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.0 - 7.3.0beta1
2