3v4l.org

run code in 200+ php & hhvm versions
<?php var_dump(arsort(array_count_values(array('JPG', 'JPG', 'TXT', 'TXT'))));
based on ZaYjq
Output for 7.0.0 - 7.2.6
Notice: Only variables should be passed by reference in /in/B0GIo on line 3 bool(true)
Output for 5.1.0 - 5.6.28
Strict Standards: Only variables should be passed by reference in /in/B0GIo on line 3 bool(true)
Output for 5.0.5
Fatal error: Only variables can be passed by reference in /in/B0GIo on line 3
Process exited with code 255.
Output for 4.3.0 - 5.0.4
bool(true)