3v4l.org

run code in 300+ PHP versions simultaneously
<?php function f(&$a) { echo 'works'; } $b=1; c=&$b; call_user_func_array('f', array($b));
Output for 5.3.0 - 5.3.18, 5.4.0 - 5.4.8
Parse error: syntax error, unexpected '=' in TgsVk on line 6
Process exited with code 255.
preferences:
170.55 ms | 1395 KiB | 35 Q