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<?php $x = [ 'a' => 3, 'b' => 6, ]; $y = [ 'c' => 1, 'd' => 3, 'a' => 1, ]; var_dump($x + $y); var_dump($y + $x);
Output for git.master, git.master_jit, rfc.property-hooks
array(4) { ["a"]=> int(3) ["b"]=> int(6) ["c"]=> int(1) ["d"]=> int(3) } array(4) { ["c"]=> int(1) ["d"]=> int(3) ["a"]=> int(1) ["b"]=> int(6) }

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