3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $x = NULL; $y = 2; $z = 3; var_dump($x ?? $y ?? $z); // result will be int(3)
Output for 7.0.0 - 7.2.0
int(2)
Output for 5.5.0 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/R9bSp on line 6
Process exited with code 255.