Processing of php array duplicate data

{Code...} combines the repeated goodsId product information in the array. The result is: {code ...}

Array (4) {[0] => array (7) {["goodsId"] => string (2) "15" ["goodsNo"] => string (13) "9311770592581" ["goodsName"] => string (37) "DCS super moisturizing foam cleanser/cleanser" ["price"] => string (5) "40.00" ["currency"] => string (2) "15" ["quantity"] => int (1) ["goods_tax_price"] => string (1) "0"} [1] => array (7) {["goodsId"] => string (2) "16" ["goodsNo"] => string (13) "9327693000805" ["goodsName"] => string (21) "DCS Super nutrition essence" ["price"] => string (5) & quot; 10.00 & quot; [& quot; currency & quot;] => string (2) & quot; 15 & quot; [& quot; quantity & quot;] = & quot; string (1) "1" ["goods_tax_price"] => string (1) "0"} [2] => array (7) {["goodsId"] => string (2) "17" ["goodsNo"] => string (13) "9327693000744" ["goodsName"] => string (18) "DCS Super nutrition" ["price"] => string (5) "30.00" ["currency"] => string (2) "15" ["quantity"] => string (1) "1" ["goods_tax_price"] => string (1) "0"} [3] => array (7) {["goodsId"] => string (2) "18" ["goodsNo"] => string (13) "9311770592505" ["goodsName"] => string (27) "DCS concentrated whitening dynamic mask" ["price"] => string (5) & quot; 40.00 & quot; [& quot; currency & quot;] => string (2) & quot; 15 & quot; [& quot; quantity & quot;] = & quot; string (1) "1" ["goods_tax_price"] => string (1) "0"} [4] => array (7) {["goodsId"] => string (2) "18" ["goodsNo"] => string (13) "9311770592505" ["goodsName"] => string (27) "DCS concentrated whitening dynamic mask" ["price"] => string (5) "40.00" ["currency"] => string (2) "15" ["quantity"] => string (1) "2" ["goods_tax_price"] => string (1) "0 "}}

Combine the repeated goodsId product information in the array, and the number is the sum of the quantity (same product sum)

The result should be:

Array (4) {[0] => array (7) {["goodsId"] => string (2) "15" ["goodsNo"] => string (13) "9311770592581" ["goodsName"] => string (37) "DCS super moisturizing foam cleanser/cleanser" ["price"] => string (5) "40.00" ["currency"] => string (2) "15" ["quantity"] => int (1) ["goods_tax_price"] => string (1) "0"} [1] => array (7) {["goodsId"] => string (2) "16" ["goodsNo"] => string (13) "9327693000805" ["goodsName"] => string (21) "DCS Super nutrition essence" ["price"] => string (5) & quot; 10.00 & quot; [& quot; currency & quot;] => string (2) & quot; 15 & quot; [& quot; quantity & quot;] = & quot; string (1) "1" ["goods_tax_price"] => string (1) "0"} [2] => array (7) {["goodsId"] => string (2) "17" ["goodsNo"] => string (13) "9327693000744" ["goodsName"] => string (18) "DCS Super nutrition" ["price"] => string (5) "30.00" ["currency"] => string (2) "15" ["quantity"] => string (1) "1" ["goods_tax_price"] => string (1) "0"} [3] => array (7) {["goodsId"] => string (2) "18" ["goodsNo"] => string (13) "9311770592505" ["goodsName"] => string (27) "DCS concentrated whitening dynamic mask" ["price"] => string (5) & quot; 40.00 & quot; [& quot; currency & quot;] => string (2) & quot; 15 & quot; [& quot; quantity & quot;] = & quot; string (1) "3" ["goods_tax_price"] => string (1) "0 "}}

Reply content:

Array (4) {[0] => array (7) {["goodsId"] => string (2) "15" ["goodsNo"] => string (13) "9311770592581" ["goodsName"] => string (37) "DCS super moisturizing foam cleanser/cleanser" ["price"] => string (5) "40.00" ["currency"] => string (2) "15" ["quantity"] => int (1) ["goods_tax_price"] => string (1) "0"} [1] => array (7) {["goodsId"] => string (2) "16" ["goodsNo"] => string (13) "9327693000805" ["goodsName"] => string (21) "DCS Super nutrition essence" ["price"] => string (5) & quot; 10.00 & quot; [& quot; currency & quot;] => string (2) & quot; 15 & quot; [& quot; quantity & quot;] = & quot; string (1) "1" ["goods_tax_price"] => string (1) "0"} [2] => array (7) {["goodsId"] => string (2) "17" ["goodsNo"] => string (13) "9327693000744" ["goodsName"] => string (18) "DCS Super nutrition" ["price"] => string (5) "30.00" ["currency"] => string (2) "15" ["quantity"] => string (1) "1" ["goods_tax_price"] => string (1) "0"} [3] => array (7) {["goodsId"] => string (2) "18" ["goodsNo"] => string (13) "9311770592505" ["goodsName"] => string (27) "DCS concentrated whitening dynamic mask" ["price"] => string (5) & quot; 40.00 & quot; [& quot; currency & quot;] => string (2) & quot; 15 & quot; [& quot; quantity & quot;] = & quot; string (1) "1" ["goods_tax_price"] => string (1) "0"} [4] => array (7) {["goodsId"] => string (2) "18" ["goodsNo"] => string (13) "9311770592505" ["goodsName"] => string (27) "DCS concentrated whitening dynamic mask" ["price"] => string (5) "40.00" ["currency"] => string (2) "15" ["quantity"] => string (1) "2" ["goods_tax_price"] => string (1) "0 "}}

Combine the repeated goodsId product information in the array, and the number is the sum of the quantity (same product sum)

The result should be:

Array (4) {[0] => array (7) {["goodsId"] => string (2) "15" ["goodsNo"] => string (13) "9311770592581" ["goodsName"] => string (37) "DCS super moisturizing foam cleanser/cleanser" ["price"] => string (5) "40.00" ["currency"] => string (2) "15" ["quantity"] => int (1) ["goods_tax_price"] => string (1) "0"} [1] => array (7) {["goodsId"] => string (2) "16" ["goodsNo"] => string (13) "9327693000805" ["goodsName"] => string (21) "DCS Super nutrition essence" ["price"] => string (5) & quot; 10.00 & quot; [& quot; currency & quot;] => string (2) & quot; 15 & quot; [& quot; quantity & quot;] = & quot; string (1) "1" ["goods_tax_price"] => string (1) "0"} [2] => array (7) {["goodsId"] => string (2) "17" ["goodsNo"] => string (13) "9327693000744" ["goodsName"] => string (18) "DCS Super nutrition" ["price"] => string (5) "30.00" ["currency"] => string (2) "15" ["quantity"] => string (1) "1" ["goods_tax_price"] => string (1) "0"} [3] => array (7) {["goodsId"] => string (2) "18" ["goodsNo"] => string (13) "9311770592505" ["goodsName"] => string (27) "DCS concentrated whitening dynamic mask" ["price"] => string (5) & quot; 40.00 & quot; [& quot; currency & quot;] => string (2) & quot; 15 & quot; [& quot; quantity & quot;] = & quot; string (1) "3" ["goods_tax_price"] => string (1) "0 "}}

Let's talk about the code directly:

$ Arr = array ('0' => array ('id' => 1, 'count' => 1 ,), '1' => array ('id' => 2, 'count' => 1,), '2' => array ('id' => 4, 'Count' => 1,), '3' => array ('id' => 2, 'count' => 1 ,),); $ new = $ news = $ newss = array (); foreach ($ arr as $ key = >$ value) {if (! In_array ($ value ['id'], $ new) {$ new [] = $ value ['id']; // $ new save the unique id value $ news [$ key] = $ value; // $ news: save the array value of unique IDs $ newss [$ value ['id'] = $ key; // $ key value for saving unique IDs in newss} else {$ k = $ newss [$ value ['id']; // retrieve the first key value saved by the duplicate id $ count = (int) $ news [$ k] ['count']; // retrieve the first count value saved with the same id $ news [$ k] ['count'] = $ count + 1; // assign a value to a new array} var_dump ($ news );

Let's talk about one idea. use a dictionary.
Because goodsId is unique, k is goodsId
Traverse the array. if goodsId is in the dictionary, add the corresponding value. If no value exists, put the corresponding data in the dictionary.

Two-dimensional array deduplication, see if you want a result: http://zhidao.baidu.com/link ?...

Are these data retrieved from the database? if so, re-reading can depend on SQL query de-duplicating. if merge is later, you can find PHP version iterator classes, the operation can be simpler, but it will never be able to traverse the array.

Is this a two-dimensional array de-duplication problem? If so, I looked for the previous code and wrote such a function.