3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class A { function __invoke() { echo 'hello'; } } $class = 'A'; $class();
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function A() in /in/VdD02:8 Stack trace: #0 {main} thrown in /in/VdD02 on line 8
Process exited with code 255.
Output for 5.3.19 - 5.6.28
Fatal error: Call to undefined function A() in /in/VdD02 on line 8
Process exited with code 255.