<?php
interface AggregateRoot
{}
class Customer implements AggregateRoot
{}
interface AggregateRootFactory
{
public function create() : AggregateRoot;
}
class CustomerFactory implements AggregateRootFactory
{
public function create() : Customer // Customer is subtype of AggregateRoot, it should work
{
return new Customer();
}
}
$factory = new CustomerFactory();
$customer = $factory->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
Fatal error: Declaration of CustomerFactory::create(): Customer must be compatible with AggregateRootFactory::create(): AggregateRoot in /in/MgU9b on line 14
Process exited with code 255.
Output for 5.6.0 - 5.6.25
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/MgU9b on line 11
Process exited with code 255.