3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!interface_exists('Throwable')) { interface Throwable{} } if (true) { class FooException extends Exception implements Throwable {} class BarException implements Throwable {} }
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.21, 8.4.1 - 8.4.7
Fatal error: Class BarException cannot implement interface Throwable, extend Exception or Error instead in /in/o2t00 on line 9
Process exited with code 255.
Output for 5.6.0 - 5.6.40
preferences:
156 ms | 407 KiB | 5 Q