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<?php var_dump(array_merge([1 => 'a', 3 => 'b'], [2 => 'c', 3 => 'd'])); var_dump(array_merge([1 => 'a', 3 => 'b'], [2 => 'c', 5 => 'd']));
Output for git.master, git.master_jit, rfc.property-hooks
array(4) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" [3]=> string(1) "d" } array(4) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" [3]=> string(1) "d" }

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