3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1="a",2="b",3=>"c",4=>"d"); foreach($a as $key=>$value) { $a[$key]=$value+2; } print_r($a);
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.30, 5.6.8 - 5.6.14
Parse error: syntax error, unexpected '=', expecting ')' in /in/A82Qj on line 2
Process exited with code 255.
preferences:
185.37 ms | 1395 KiB | 64 Q