3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class foo { function __toString() { return "bar";}} $a = new foo(); var_dump(++$a);
based on eIEvL
Output for 5.0.0 - 7.1.0
object(foo)#1 (0) { }
Output for 4.3.0 - 4.4.9
object(foo)(0) { }