3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $hi = 'hi'; echo $hi.'<br />'; echo $HI.'<br />';
Output for 5.0.4 - 7.1.0
hi<br /> Notice: Undefined variable: HI in /in/7YJTC on line 6 <br />
Output for 4.3.0 - 5.0.3
hi<br /> Notice: Undefined variable: HI in /in/7YJTC on line 6 <br />