3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $d = 1; $x = function & (&$a) { return $a; }; $e =& $x->__invoke($d); $e = 5; var_dump($d);
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(5)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/3KNAA on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/3KNAA on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/3KNAA on line 3
Process exited with code 255.