3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class a {} class b {} class c {} class foo {} $temp = "foo"; $x = new $temp(new a(new b(new c))); var_dump($x);
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
object(foo)#1 (0) { }
Output for 4.3.0 - 4.4.9
object(foo)(0) { }