3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_export(STDOUT);
based on F8LDj
Output for 5.2.3 - 7.1.7
NULL
Output for 4.3.0 - 5.2.2
Notice: Use of undefined constant STDOUT - assumed 'STDOUT' in /in/pTeKT on line 2 'STDOUT'