3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $foo = null; is_null($foo) ($foo === null);
based on vjotS
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Function name must be a string in /in/vCMIA:3 Stack trace: #0 {main} thrown in /in/vCMIA on line 3
Process exited with code 255.
Output for 5.3.19 - 5.6.28
Parse error: syntax error, unexpected '(' in /in/vCMIA on line 4
Process exited with code 255.