3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php print_r(ksort(array( '13-2014' => 'a', '14-2014' => 'a', '6-2014' => 'a', )));
Output for 5.3.0 - 5.4.31
Fatal error: Only variables can be passed by reference in /in/OJfUV on line 7
Process exited with code 255.