3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo $username = $_GET['user'] ?? 'nobody';
based on LudGI
Output for 7.0.0 - 7.2.0
nobody
Output for 5.3.19 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/pouiD on line 2
Process exited with code 255.