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<?php function f(\array $a){} $a = []; echo gettype($a); f($a);
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array Fatal error: Uncaught TypeError: f(): Argument #1 ($a) must be of type array, array given, called in /in/Dg8pr on line 6 and defined in /in/Dg8pr:3 Stack trace: #0 /in/Dg8pr(6): f(Array) #1 {main} thrown in /in/Dg8pr on line 3
Process exited with code 255.

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