PHP create array from another array

Question

I have an array which I have received from an API.

object(stdClass)#19498 (4) {
  ["success"]=>
  bool(true)
  ["quoteId"]=>
  int(0011)
  ["abcValue"]=>
  float(00)
  ["priceResponse"]=>
  array(4) {
    [0]=>
    object(stdClass)#19502 (9) {
      ["priceId"]=>
      int(1263)
      ["fPrice"]=>
      float(37.14)
      ["grossPrice"]=>
      float(44.7)
      ["priceType"]=>
      string(2) "ABC"
    }
    [1]=>
    object(stdClass)#19501 (10) {
      ["priceId"]=>
      int(1263)
      ["fPrice"]=>
      float(37.14)
      ["grossPrice"]=>
      float(44.7)
      ["priceType"]=>
      string(2) "ABC"
    }
    [2]=>
    object(stdClass)#19500 (8) {
      ["priceId"]=>
      int(1266)
      ["fPrice"]=>
      float(550.14)
      ["grossPrice"]=>
      float(544.7)
      ["priceType"]=>
      string(2) "DEF"
    }
  }
}

I want to loop through the array to add another object in PriceResponse ie customPrice and also delete some objects from the array like fPrice , priceType etc. The best way I figured to do this was to create another array. However I can't seem to get it working:

PHP:

$output_array = json_decode($output);
$modified_array = array();
$priceResultArray = array();

foreach($output_array as $j => $item) {

    foreach($output_array->priceResponse as $i => $field) {
        $percent =  $field->grossPrice * 10 / 100;
        $customPrice =  $field->grossPrice + $percent;


        $priceResultArray['priceId'] = $field->priceId;
        $priceResultArray['customPrice'] = $customPrice;

    }

    $modified_array['success'] = $output_array->success;
    $modified_array['quoteId'] = $output_array->quoteId;
    $modified_array['priceResponse'] = $priceResultArray;

}
var_dump($modified_array);

This is the output of the modified array - it only shows the last result of the priceResultArray:

array(3) {
  ["success"]=>
  bool(true)
  ["quoteId"]=>
  int(0011)
  ["priceResult"]=>
  array(5) {
    ["priceId"]=>
    int(1266)
    ["customPrice"]=>
    float(599.17)
  }
}

Any pointers would be appreciated.

Answer 1

You have such output because you put values inside the same keys within your loop. You should create new object on each loop interation. Checkout this code:

 $output_array = json_decode($output); $modified_array = array(); $priceResultArray = array(); foreach($output_array as $j => $item) { foreach($output_array->priceResponse as $i => $field) { $percent = $field->grossPrice * 10 / 100; $customPrice = $field->grossPrice + $percent; $singlePriceResult = array(); $singlePriceResult['priceId'] = $field->priceId; $singlePriceResult['customPrice'] = $customPrice; $priceResultArray[] = $singlePriceResult; } $modified_array['success'] = $output_array->success; $modified_array['quoteId'] = $output_array->quoteId; $modified_array['priceResponse'] = $priceResultArray; } var_dump($modified_array); 

Answer 2

You don't need the outer loop. $output_array is a single object, not an array. You're looping over the properties, but never doing anything with $j or $item .

And instead of creating a new array, you can simply modify the objects in the original priceResponse array.

$output_array = json_decode($output);
foreach ($output_array->priceResponse as $field) {
    $percent =  $field->grossPrice * 10 / 100;
    $customPrice =  $field->grossPrice + $percent;
    $field->customPrice = $customPrice;
    unset($field->fPrice);
    unset($field->priceType);
    unset($field->grossPrice);
}