3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array('a' => 2, 'b' => 1, 'c' => 4); $array = array_merge(array_flip(array(end($array) => key($array))), array_slice($array,1,count($array) - 2), array_flip(array(reset($array) => key($array))); print_r($array);
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.22
Parse error: syntax error, unexpected ';' in /in/NtGTf on line 4
Process exited with code 255.
preferences:
180.88 ms | 1395 KiB | 58 Q