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<?php class MyArrayAccess implements \ArrayAccess { public function offsetExists($offset) { } public function offsetSet($offset, $value) { } public function offsetGet($offset) { } public function offsetUnset($offset) { } } function test(array $arr) { } function test2(\ArrayAccess $arr) { } $arrObj = new MyArrayAccess(); test([]); //result: works! test($arrObj); //result: does NOT work test2([]); //result: does NOT work test2($arrObj); // result: works!
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of MyArrayAccess::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/KXthb on line 5 Deprecated: Return type of MyArrayAccess::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/KXthb on line 15 Deprecated: Return type of MyArrayAccess::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/KXthb on line 10 Deprecated: Return type of MyArrayAccess::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/KXthb on line 20 Fatal error: Uncaught TypeError: test(): Argument #1 ($arr) must be of type array, MyArrayAccess given, called in /in/KXthb on line 39 and defined in /in/KXthb:27 Stack trace: #0 /in/KXthb(39): test(Object(MyArrayAccess)) #1 {main} thrown in /in/KXthb on line 27
Process exited with code 255.

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