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<?php class Foo {} class Goo extends Foo {} interface Factory { static function create(Foo $foo); } class FooFactory implements Factory { static function create(Foo $foo) { return $foo; } } class GooFactory implements Factory { static function create(Goo $goo) { return $goo; } } var_dump(FooFactory::create(new Foo())); var_dump(GooFactory::create(new Goo()));
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Declaration of GooFactory::create(Goo $goo) must be compatible with Factory::create(Foo $foo) in /in/F43Z4 on line 15
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Fatal error: Declaration of GooFactory::create(Goo $goo) must be compatible with Factory::create(Foo $foo) in /in/F43Z4 on line 14
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Declaration of GooFactory::create() must be compatible with Factory::create(Foo $foo) in /in/F43Z4 on line 14
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Fatal error: Declaration of GooFactory::create() must be compatible with that of Factory::create() in /in/F43Z4 on line 14
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/F43Z4 on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING in /in/F43Z4 on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/F43Z4 on line 6
Process exited with code 255.

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