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<?php $source = ["a" => 1, "b" => 2, "c" => 3]; $input = ["d" => 4, "b" => 10]; $new = $source + ($source + $input); print_r($new);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [a] => 1 [b] => 2 [c] => 3 [d] => 4 )

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