3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function getArray() { return [1, 2, 3]; } function squareArray(array &$a) { foreach ($a as &$v) { $v **= 2; } } // Generates a warning in PHP 7. squareArray((getArray()));

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

Output for Arrow functions
Notice: Only variables should be passed by reference in /in/HYONN on line 14
Output for Object typehint
Notice: Only variables should be passed by reference in /in/HYONN on line 14

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