- Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
- Fatal error: Cannot use isset() on the result of an expression (you can use "null !== expression" instead) in /in/Gmuec on line 3
Process exited with code 255.
<?php
var_dump(isset('foo'));
var_dump(isset(''));
var_dump(isset(null));
var_dump(isset(0));
var_dump(isset(1));