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@ 2019-08-23T08:37:30Z

<?php

spl_autoload_register(function($class) {
    if ($class === 'A') {
        class A {
            public function foo($x): B {
                return new B;
            }
        }
    } else if ($class === 'B') {
        class B extends A {
            public function foo($x): C {
                return new C;
            }
        }
    } else if ($class === 'C') {
        class C extends B implements N {
        }
    }
});

new B;

Output
Performance
VLD
References
Branches

spl_autoload_register: documentation ( source)

preferences:dark modelive previewkey bindings

26.55 ms | 1513 KiB | 5 Q