3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class A { public function foo() { $f = function() { $name = "this"; var_dump($$name); }; $f(); }} $a = new A; $a->foo(); sort($a = array(2, 1));

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for Typed properties v2
Notice: Undefined variable: this in /in/aFKFg on line 2 NULL Notice: Only variables should be passed by reference in /in/aFKFg on line 3
Output for Array change keys
Notice: Undefined variable: this in /in/aFKFg on line 2 NULL Notice: Only variables should be passed by reference in /in/aFKFg on line 3
Output for Lexical anon
Notice: Undefined variable: this in /in/aFKFg on line 2 NULL Strict Standards: Only variables should be passed by reference in /in/aFKFg on line 3

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page