3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function &f($x){ $x[] = 'x'; } $t = array(); f($t); var_dump($t);
Output for 4.4.0 - 4.4.9, 5.1.0 - 7.1.0
Notice: Only variable references should be returned by reference in /in/jjAJ4 on line 5 array(0) { }
Output for 5.0.0 - 5.0.5
Strict Standards: Only variable references should be returned by reference in /in/jjAJ4 on line 5 array(0) { }
Output for 4.3.0 - 4.3.11
array(0) { }