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<?php namespace V1 { interface Foo { public function merge(Foo $foo); } } namespace V2 { interface Foo extends \V1\Foo { } } namespace { use V2\Foo; // use V1\Foo; class FooImpl implements Foo { public function merge(Foo $foo) { // ... } } $fooImpl1 = new FooImpl; $fooImpl2 = new FooImpl; $fooImpl1->merge($fooImpl2); }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of FooImpl::merge(V2\Foo $foo) must be compatible with V1\Foo::merge(V1\Foo $foo) in /in/I2gkY on line 22
Process exited with code 255.

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