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<?php $arrays = [ [ "id" => 1, "order_id" => 1, "image_url" => "/resources/filename1" ], [ "id" => 2, "order_id" => 1, "image_url" => "/resources/filename2" ] ]; foreach($arrays as $array) { $result[$array['order_id']][]=$array['image_url']; } print_r($result);

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50.95 ms | 402 KiB | 5 Q