3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php define('DB_USER','root'); echo "DB_USER=$GLOBALS[db_user]";
based on 9RIML
Output for 5.3.0 - 7.1.0
Notice: Undefined index: db_user in /in/iAVfo on line 3 DB_USER=
Output for 4.3.0 - 5.2.17
Notice: Undefined index: db_user in /in/iAVfo on line 3 DB_USER=