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<?php $ids = [1, 2, 2, 3]; $vals = [10, 20, 30, 50]; foreach ($ids as $index => $id) { if (!isset($result[$id])) { $result[$id] = $vals[$index]; } else { $result[$id] += $vals[$index]; } } var_export($result);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 1 => 10, 2 => 50, 3 => 50, )

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