3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php //$var1 = "test"; $var2 = $var1 ?? "bla"; echo $var2; ?>
based on LQlAX
Output for 7.0.0 - 7.2.0
bla
Output for 5.3.18 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/moA8o on line 5
Process exited with code 255.