3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array(); $a .= "xxx"; print_r($a);

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: Array to string conversion in /in/uYXqA on line 5 Arrayxxx
Output for Arrow functions
Notice: Array to string conversion in /in/uYXqA on line 5 Arrayxxx
Output for Object typehint
Notice: Array to string conversion in /in/uYXqA on line 5 Arrayxxx
Output for Array change keys
Notice: Array to string conversion in /in/uYXqA on line 5 Arrayxxx
Output for Lexical anon
Notice: Array to string conversion in /in/uYXqA on line 5 Arrayxxx

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