3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function changeValue(&$arg) { $return = $arg; $arg += 1; return $return; } echo changeValue(3);
Output for 4.3.2 - 5.4.31
Fatal error: Only variables can be passed by reference in /in/lJZ4O on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Only variables can be passed by reference in /in/lJZ4O on line 9