3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $foo = new stdClass; var_dump($foo->a->b->c ?? null);
Output for 7.0.0 - 7.2.0
NULL
Output for 5.3.20 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/eWFoB on line 5
Process exited with code 255.