<?php
interface Garage {
public function create():Vehicle;
}
class CarGarage implements Garage {
public function create():Car {
return new Car();
}
}
class Vehicle {}
class Car extends Vehicle {}
$class = new CarGarage();
var_dump($class->create());
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
object(Car)#2 (0) {
}
Fatal error: Declaration of CarGarage::create(): Car must be compatible with Garage::create(): Vehicle in /in/p1m14 on line 6
Process exited with code 255.
Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/p1m14 on line 3
Process exited with code 255.