3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class A { function bar($x) {return x;} } $x = new A; $x->bar(42);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Use of undefined constant x - assumed 'x' in /in/RjGbk on line 3