3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php //$foo = null; $foo || $foo = 'default'; var_dump($foo);
Output for 5.0.4 - 7.1.7
Notice: Undefined variable: foo in /in/B771Z on line 5 string(7) "default"
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: foo in /in/B771Z on line 5 string(7) "default"