3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $foo = null; $bar = "foo"; var_dump(isset($this->foo['baz'][1])); var_dump(_POST); ?>
based on RAsjG
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Using $this when not in object context in /in/4LicP:5 Stack trace: #0 {main} thrown in /in/4LicP on line 5
Process exited with code 255.
Output for 5.0.0 - 5.6.28
Fatal error: Using $this when not in object context in /in/4LicP on line 5
Process exited with code 255.
Output for 4.3.0 - 4.4.9
bool(false) Notice: Use of undefined constant _POST - assumed '_POST' in /in/4LicP on line 6 string(5) "_POST"