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<?php $rawData = array( array( 'sku' => 'product1', 'quantity' => '3' ), array( 'sku' => 'product2', 'quantity' => '3' ), array( 'sku' => 'product1', 'quantity' => '2' ) ); $collectedData = array(); foreach ($rawData as $value) { if (!isset($collectedData[$value['sku']])) $collectedData[$value['sku']] = $value['quantity']; else $collectedData[$value['sku']] += $value['quantity']; } print_r($collectedData);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [product1] => 5 [product2] => 3 )

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