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<?php class Something { public function action() { return 'Hello, World!'; } } $callable1 = [Something::class, 'action']; $callable2 = 'Something::action'; $callable3 = ['SomethingContainerName', 'action']; var_dump(is_callable($callable1)); var_dump(is_callable($callable2)); var_dump(is_callable($callable3)); function test(callable $callable) { return is_callable($callable); } var_dump(test($callable1)); var_dump(test($callable2)); var_dump(test($callable3));
Output for git.master, git.master_jit, rfc.property-hooks
bool(false) bool(false) bool(false) Fatal error: Uncaught TypeError: test(): Argument #1 ($callable) must be of type callable, array given, called in /in/hubg8 on line 23 and defined in /in/hubg8:19 Stack trace: #0 /in/hubg8(23): test(Array) #1 {main} thrown in /in/hubg8 on line 19
Process exited with code 255.

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