3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface FooInterface { public function bar(string $a, array $eventSourceOptions = []): string; } class AppFoo implements FooInterface { public function bar(string $a): string { return $a; } }
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
Fatal error: Declaration of AppFoo::bar(string $a): string must be compatible with FooInterface::bar(string $a, array $eventSourceOptions = []): string in /in/0elpc on line 11
Process exited with code 255.
preferences:
61.27 ms | 406 KiB | 5 Q