3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Goofy { public function hello() { echo 'Hello World!', PHP_EOL; } } (new Goofy(pippo))->hello();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Uncaught Error: Undefined constant "pippo" in /in/nddbr:10 Stack trace: #0 {main} thrown in /in/nddbr on line 10
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant pippo - assumed 'pippo' (this will throw an Error in a future version of PHP) in /in/nddbr on line 10 Hello World!
Output for 7.1.0 - 7.1.33
Notice: Use of undefined constant pippo - assumed 'pippo' in /in/nddbr on line 10 Hello World!
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
Hello World!

preferences:
234.4 ms | 402 KiB | 375 Q