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<?php $a = ['a'=> 'b', 'c'=> 'd']; $b = ['a'=> 'x', 'c'=> 'y', 'b'=> 'z']; var_dump($a + $b); var_dump(array_merge($a, $b));
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { ["a"]=> string(1) "b" ["c"]=> string(1) "d" ["b"]=> string(1) "z" } array(3) { ["a"]=> string(1) "x" ["c"]=> string(1) "y" ["b"]=> string(1) "z" }

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