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<?php class C{} class D extends C{} interface iA{ public function m(C $obj); } class A implements iA{ public function m(C $obj) { $b =2; } } class B implements iA{ public function m(D $obj) { $a = 1; } }
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 B::m(D $obj) must be compatible with iA::m(C $obj) in /in/E1Gl5 on line 19
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33
Fatal error: Declaration of B::m(D $obj) must be compatible with iA::m(C $obj) in /in/E1Gl5 on line 17
Process exited with code 255.
Output for 5.4.1 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Declaration of B::m() must be compatible with iA::m(C $obj) in /in/E1Gl5 on line 17
Process exited with code 255.

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