3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo $_GET['foo'] ?? $_POST['foo'] ?? null;
based on ptJON
Output for 7.0.0 - 7.2.0
Output for 5.3.20 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/ISKU6 on line 3
Process exited with code 255.