3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $test = ''; $f = $test ?? 'hans'; var_dump($f);
based on no1tH
Output for hhvm-3.18.5 - 3.22.0, 7.0.0 - 7.3.0beta1
string(0) ""
Output for 5.6.0 - 5.6.30
Parse error: syntax error, unexpected '?' in /in/Ebih5 on line 4
Process exited with code 255.