<?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!
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