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<?php var_dump(array_filter(['a' => 'b', 1 => 'abc', 'c' => false, 'd' => null, 'e' => 0, 'f' => 'z']));
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { ["a"]=> string(1) "b" [1]=> string(3) "abc" ["f"]=> string(1) "z" }

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