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phpmysqlarraysmultidimensional-array
pocockn
pocockn

Reputation: 2063

Creating multidimensional array PHP

I'm attempting to create a multidimensional array which should have the ID and quantity from the $_POST array. At the moment it seems to put every quantity into each an element with each ID.However I want it to take the first elements from each array and then add them together to a new array and so on.

Whereas it should be 

ID 1 - Quantity 100
ID 2 - Quantity 50

etc

But at the moment I get this

array(16) {
  [0]=>
  array(2) {
    ["id"]=>
    string(1) "1"
    ["quantity"]=>
    string(2) "50"
  }
  [1]=>
  array(2) {
    ["id"]=>
    string(1) "1"
    ["quantity"]=>
    string(3) "100"
  }
  [2]=>
  array(2) {
    ["id"]=>
    string(1) "1"
    ["quantity"]=>
    string(3) "100"
  }
  [3]=>
  array(2) {
    ["id"]=>
    string(1) "1"
    ["quantity"]=>
    string(3) "100"
  }
  [4]=>
  array(2) {
    ["id"]=>
    string(2) "12"
    ["quantity"]=>
    string(2) "50"
  }
  [5]=>
  array(2) {
    ["id"]=>
    string(2) "12"
    ["quantity"]=>
    string(3) "100"
  }
  [6]=>
  array(2) {
    ["id"]=>
    string(2) "12"
    ["quantity"]=>
    string(3) "100"
  }
  [7]=>
  array(2) {
    ["id"]=>
    string(2) "12"
    ["quantity"]=>
    string(3) "100"
  }
  [8]=>
  array(2) {
    ["id"]=>
    string(1) "2"
    ["quantity"]=>
    string(2) "50"
  }
  [9]=>
  array(2) {
    ["id"]=>
    string(1) "2"
    ["quantity"]=>
    string(3) "100"
  }
  [10]=>
  array(2) {
    ["id"]=>
    string(1) "2"
    ["quantity"]=>
    string(3) "100"
  }
  [11]=>
  array(2) {
    ["id"]=>
    string(1) "2"
    ["quantity"]=>
    string(3) "100"
  }
  [12]=>
  array(2) {
    ["id"]=>
    string(1) "6"
    ["quantity"]=>
    string(2) "50"
  }
  [13]=>
  array(2) {
    ["id"]=>
    string(1) "6"
    ["quantity"]=>
    string(3) "100"
  }
  [14]=>
  array(2) {
    ["id"]=>
    string(1) "6"
    ["quantity"]=>
    string(3) "100"
  }
  [15]=>
  array(2) {
    ["id"]=>
    string(1) "6"
    ["quantity"]=>
    string(3) "100"
  }
}

Here is my PHP code.

foreach($_POST['sweetids'] as $id) {

foreach($_POST['quantites'] as $quantity) {

    $stock_array[] = array(
        "id"=> $id,
        "quantity" => $quantity
        );
}

}

Upvotes: 0

Views: 83

Answers (2)

Mr. Llama
Mr. Llama

Reputation: 20909

You're iterating $_POST['quantities'] for every $_POST['sweetids'] which is probably not what you intend. When you iterate both, your result will be every combination of sweetids and quantities, not each pair of them.

I'm guessing you meant something more like:

// Assuming you already verified that $_POST['quantities'] and $_POST['sweetids'] exist
//   and that both of them have the same number of elements
for ( $i = 0, $len = count($_POST['sweetids']); $i < $len; $i++ ) {
    $stock_array[] = array(
        'id' => $_POST['sweetids'][$i],
        'quantity' => $_POST['quantities'][$i]
    );
}

Upvotes: 0

Chris Lear
Chris Lear

Reputation: 6742

I think this is what you're trying to achieve:

foreach($_POST['sweetids'] as $key=>$id) {

    $stock_array[] = array(
        "id"=> $id,
        "quantity" => $_POST['quantities'][$key]
        );
}

Upvotes: 1

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