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

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