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<?php interface I { public function example($a, $b, $c); } class A implements I { public function example($a, $b = null, $c = null) { } // compatible with I::example } class B extends A { public function example($a, $b, $c = null) { } // compatible with I::example } function accepts_i(I $i) { $i->example(1, 2, 3); } accepts_i(new B); // no problem function accepts_a(A $a) { $a->example(1); } accepts_a(new B); // problem
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Declaration of B::example($a, $b, $c = null) must be compatible with A::example($a, $b = null, $c = null) in /in/OneV3 on line 10
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Fatal error: Declaration of B::example($a, $b, $c = NULL) must be compatible with A::example($a, $b = NULL, $c = NULL) in /in/OneV3 on line 10
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.33
Fatal error: Declaration of B::example($a, $b, $c = NULL) must be compatible with A::example($a, $b = NULL, $c = NULL) in /in/OneV3 on line 9
Process exited with code 255.
Output for 7.1.0 - 7.1.20
Fatal error: Uncaught ArgumentCountError: Too few arguments to function B::example(), 1 passed in /in/OneV3 on line 19 and at least 2 expected in /in/OneV3:10 Stack trace: #0 /in/OneV3(19): B->example(1) #1 /in/OneV3(21): accepts_a(Object(B)) #2 {main} thrown in /in/OneV3 on line 10
Process exited with code 255.
Output for 7.0.0 - 7.0.20
Warning: Missing argument 2 for B::example(), called in /in/OneV3 on line 19 and defined in /in/OneV3 on line 10
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