3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(hello);
Output for 7.2.0
Warning: Use of undefined constant hello - assumed 'hello' (this will throw an Error in a future version of PHP) in /in/IMOi4 on line 3 string(5) "hello"
Output for 5.3.18 - 7.1.10
Notice: Use of undefined constant hello - assumed 'hello' in /in/IMOi4 on line 3 string(5) "hello"