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<?php $obj = new stdClass(); function test(array $arr) { var_dump($arr); } test($obj);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: test(): Argument #1 ($arr) must be of type array, stdClass given, called in /in/RoSkq on line 9 and defined in /in/RoSkq:5 Stack trace: #0 /in/RoSkq(9): test(Object(stdClass)) #1 {main} thrown in /in/RoSkq on line 5
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, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Argument 1 passed to test() must be of the type array, object given, called in /in/RoSkq on line 9 and defined in /in/RoSkq:5 Stack trace: #0 /in/RoSkq(9): test(Object(stdClass)) #1 {main} thrown in /in/RoSkq on line 5
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Catchable fatal error: Argument 1 passed to test() must be of the type array, object given, called in /in/RoSkq on line 9 and defined in /in/RoSkq on line 5
Process exited with code 255.

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