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<?php var_dump(array_filter([1, 2,], function($v, $k) { var_dump($v, $k); return true; }));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/J4AvL:3 Stack trace: #0 [internal function]: {closure}(1) #1 /in/J4AvL(3): array_filter(Array, Object(Closure)) #2 {main} thrown in /in/J4AvL on line 3
Process exited with code 255.

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