3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function my_array(){ return array('a','b'); } $array = my_array(); $item1 = array_pop($array); // Valid $item2 = array_pop(my_array()); // Invalid
based on vrI8V
Output for 7.0.0 - 7.2.0
Notice: Only variables should be passed by reference in /in/oD6CZ on line 11
Output for 5.3.21 - 5.6.28
Strict Standards: Only variables should be passed by reference in /in/oD6CZ on line 11