3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function foo(&$bar) { var_dump($bar); } $z = new stdclass; call_user_func("foo", array($z));
Output for 7.1.0
Warning: Parameter 1 to foo() expected to be a reference, value given in /in/mr3DN on line 4 array(1) { [0]=> object(stdClass)#1 (0) { } }
Output for 5.0.0 - 7.0.14
array(1) { [0]=> object(stdClass)#1 (0) { } }
Output for 4.3.0 - 4.4.9
array(1) { [0]=> object(stdClass)(0) { } }