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<?php function test(int $x = null) { var_export($x); } test(1); test(null); test('x');
Output for git.master, git.master_jit, rfc.property-hooks
1NULL Fatal error: Uncaught TypeError: test(): Argument #1 ($x) must be of type ?int, string given, called in /in/5SGUh on line 7 and defined in /in/5SGUh:3 Stack trace: #0 /in/5SGUh(7): test('x') #1 {main} thrown in /in/5SGUh on line 3
Process exited with code 255.

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