3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array("foo", "bar", "baz"); var_dump( array_shift(array_values($a)) );
Output for 7.0.0 - 7.1.0
Notice: Only variables should be passed by reference in /in/2kMve on line 5 string(3) "foo"
Output for 4.3.0 - 5.0.4, hhvm-3.10.0 - 3.12.0
string(3) "foo"
Output for 5.1.0 - 5.6.28
Strict Standards: Only variables should be passed by reference in /in/2kMve on line 6 string(3) "foo"
Output for 5.0.5
Fatal error: Only variables can be passed by reference in /in/2kMve on line 6
Process exited with code 255.