3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $txt = "kkklla"; $char = count_chars($txt, 1); arsort($char); $chars = []; foreach ($char as $key => $val) { echo chr($key)= $value; } var_dump($chars);
based on 1lEt3
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.1.7
Fatal error: Can't use function return value in write context in /in/veMJe on line 7
Process exited with code 255.
Output for hhvm-3.15.4
Fatal error: Uncaught Error: Can't use return value in write context in /in/veMJe:7 Stack trace: #0 {main}
Process exited with code 255.