Convert multidimensional objects to array

Question

I'm using amazon product advertising api. Values are returned as a multidimensional objects.

It looks like this:

object(AmazonProduct_Result)#222 (5) {
  ["_code":protected]=>
  int(200)
  ["_data":protected]=>
  string(16538) 
array(2) {
    ["IsValid"]=>
    string(4) "True"
    ["Items"]=>
    array(1) {
      [0]=>
      object(AmazonProduct_Item)#19 (1) {
        ["_values":protected]=>
        array(11) {
          ["ASIN"]=>
          string(10) "B005HNF01O"
          ["ParentASIN"]=>
          string(10) "B008RKEIZ8"
          ["DetailPageURL"]=>
          string(120) "http://www.amazon.com/Case-Logic-TBC-302-FFP-Compact/dp/B005HNF01O?SubscriptionId=AKIAJNFRQCIJLTY6LDTA&tag=*********-20"
          ["ItemLinks"]=>
          array(7) {
            [0]=>
            object(AmazonProduct_ItemLink)#18 (1) {
              ["_values":protected]=>
              array(2) {
                ["Description"]=>
                string(17) "Technical Details"
                ["URL"]=>
                string(217) "http://www.amazon.com/Case-Logic-TBC-302-FFP-Compact/dp/tech-data/B005HNF01O%3FSubscriptionId%3DAKIAJNFRQCIJLTY6LDTA%26tag%*******-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D386001%26creativeASIN%3DB005HNF01O"
              }
            }
            [1]=>
            object(AmazonProduct_ItemLink)#17 (1) {
              ["_values":protected]=>
              array(2) {

I mean it also has array inside objects. I would like to convert all of them into a multidimensional array.

Answer 1

I know this is old but you could try the following piece of code:

$array = json_decode(json_encode($object), true);

where $object is the response of the API.

Answer 2

You can use recursive function like below:

function object_to_array($obj, &$arr)
{
 if (!is_object($obj) && !is_array($obj))
 {
  $arr = $obj;
  return $arr;
 }

 foreach ($obj as $key => $value)
 {
  if (!empty($value))
  {
   $arr[$key] = array();
   objToArray($value, $arr[$key]);
  }
  else {$arr[$key] = $value;}
 }

 return $arr;
}

Answer 3

function convertObjectToArray($data) {
    if (is_object($data)) {
        $data = get_object_vars($data);
    }

    if (is_array($data)) {
        return array_map(__FUNCTION__, $data);
    }

    return $data;
}

Credit to Kevin Op den Kamp.

Answer 4

Just in case you came here as I did and didn't find the right answer for your situation, this modified version of one of the previous answers is what ended up working for me:

protected function objToArray($obj)
{
    // Not an object or array
    if (!is_object($obj) && !is_array($obj)) {
        return $obj;
    }

    // Parse array
    foreach ($obj as $key => $value) {
        $arr[$key] = $this->objToArray($value);
    }

    // Return parsed array
    return $arr;
}

The original value is a JSON string. The method call looks like this:

$array = $this->objToArray(json_decode($json, true));

Answer 5

I wrote a function that does the job, and also converts all json strings to arrays too. This works pretty fine for me.

function is_json($string) {
    // php 5.3 or newer needed;
    json_decode($string);
    return (json_last_error() == JSON_ERROR_NONE);
}

function objectToArray($objectOrArray) {
    // if is_json -> decode :
    if (is_string($objectOrArray)  &&  is_json($objectOrArray)) $objectOrArray = json_decode($objectOrArray);

    // if object -> convert to array :
    if (is_object($objectOrArray)) $objectOrArray = (array) $objectOrArray;

    // if not array -> just return it (probably string or number) :
    if (!is_array($objectOrArray)) return $objectOrArray;

    // if empty array -> return [] :
    if (count($objectOrArray) == 0) return [];

    // repeat tasks for each item :
    $output = [];
    foreach ($objectOrArray as $key => $o_a) {
        $output[$key] = objectToArray($o_a);
    }
    return $output;
}

Answer 6

This is an old question, but I recently ran into this and came up with my own solution.

array_walk_recursive($array, function(&$item){
    if(is_object($item)) $item = (array)$item;
});

Now if $array is an object itself you can just cast it to an array before putting it in array_walk_recursive:

$array = (array)$object;
array_walk_recursive($array, function(&$item){
    if(is_object($item)) $item = (array)$item;
});

And the mini-example:

array_walk_recursive($array,function(&$item){if(is_object($item))$item=(array)$item;});

In my case I had an array of stdClass objects from a 3rd party source that had a field/property whose value I needed to use as a reference to find its containing stdClass so I could access other data in that element. Basically comparing nested keys in 2 data sets.

I have to do this many times, so I didn't want to foreach over it for each item I need to find. The solution to that issue is usually array_column, but that doesn't work on objects. So I did the above first.