php - Ask for advice: How to merge two-dimensional arrays when the two fields store_id and source are the same?

Question

array(5) {
  [0]=>
  array(14) {
    ["id"]=>
    string(3) "143"
    ["store_id"]=>
    string(3) "504"
    ["goodsid"]=>
    string(2) "15"
    ["source"]=>
    string(1) "2"
  }
  [1]=>
  array(14) {
    ["id"]=>
    string(3) "142"
    ["store_id"]=>
    string(3) "503"
    ["goodsid"]=>
    string(2) "33"
    ["source"]=>
    string(1) "2"
  }
  [2]=>
  array(14) {
    ["id"]=>
    string(3) "141"
    ["store_id"]=>
    string(3) "638"
    ["goodsid"]=>
    string(2) "41"
    ["source"]=>
    string(1) "1"
  }
  [3]=>
  array(14) {
    ["id"]=>
    string(3) "140"
    ["store_id"]=>
    string(3) "638"
    ["goodsid"]=>
    string(2) "41"
    ["source"]=>
    string(1) "1"
  }
}

How to merge such arrays by making the two fields store_id and source the same?

Answer 1

No ready-made functions. I can only write it myself, and I don’t understand what you mean by merging. . .
You can cycle through the data.
New data uses the two fields $store_id.'_'.$source as key
$data[$store_id.'_'.$source][] = $_data;
This way, or how you want to handle it

Answer 2

I don’t want to write code, just my thoughts
1. Since the merger, if id and goodsid cannot be overwritten, we can only use a three-layer structure array, that is, store_id and source are the parent class as one layer, and id and goodsid subclasses are one layer.
2. Merge the two fields with the same store_id and source, that is, merge the two fields into a new array as the key value. If there are new elements, re-add all the information. If not, add the child elements directly

Answer 3

The mapping method using hashmap:
1. Construct a data structure in the form of hashmap, use the store_id and source combination as a key, use a variable array as the value, and store the entire data corresponding to the store_id and source into the variable array.
2. To facilitate the two-dimensional array, if the key combined by store_id and source already exists in the constructed data structure, then put the entire data corresponding to store_id and source into the variable array corresponding to the key. If it does not exist, add one The new key-value pair also uses the combined value of source and store_id as the key, and the variable array as the value. Put the entire data corresponding to source and store_id into the variable array corresponding to key.
3. Convenient hashmap to merge the data in the array corresponding to each key.