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

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