3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function f(array &$target, $name, $value) { $tagret[$name] = $value; } $a = array(); call_user_func('f', $a, 42, 37);
Output for 5.3.7 - 7.2.0
Warning: Parameter 1 to f() expected to be a reference, value given in /in/X3qlg on line 7