Question

My question: How can I break up and iterate through the JSON array pictured below?

I am making an AJAX web app and I need to serialize an array of objects in Javascript and put them in a url to pass to a php script. This is all going fine and the php script recieves the JSON like so..

$passed = $_GET['result']; 
if(isset($passed)){

$passed = str_replace("undefined" , " " , $passed); /*had to add this to remove the undefined value*/

$json = json_decode(stripslashes($passed));
echo"<br/>";
var_dump($json ); //this is working and dumps an array
}

When I call var_dump on the decoded JSON I echo an output like so…

array(1) { [0]=> object(stdClass)#70 (2) { ["itemCount"]=> int(0) ["ItemArray"]=> array(2) { [0]=> object(stdClass)#86 (6) { ["itemPosition"]=> int(0) ["planPosition"]=> int(0) ["Name"]=> string(5) "dsfsd" ["Description"]=> string(3) "sdf" ["Price"]=> string(0) "" ["Unit"]=> string(0) "" } [1]=> object(stdClass)#85 (6) { ["itemPosition"]=> int(1) ["planPosition"]=> int(0) ["Name"]=> string(4) "fdad" ["Description"]=> string(3) "sdf" ["Price"]=> string(0) "" ["Unit"]=> string(0) "" } } } }

The JSON
This is the JSON I am receiving. It seems like some of the pairs don’t have names? How can I access elements in this Array?

Thanks alot guys

Answer 1

Some of these elements are coming back as stdClass objects as you can see in the var_dump output. You can get at the attributes with the standard object notation, for example, with your $json variable:

echo $json[0]->itemCount; // 0
echo $json[0]->itemArray[0]->itemPostion; // 0

You can also iterate over stdClass instances just like any PHP object, you’ll be looping through the public data members, so again with your $json:

foreach(echo $json[0]->itemArray[0] as $key => $value)
  echo 'key: ' . $key . ', value: ' . $value . PHP_EOL;

will loop through that first object, echoing out the member names and values of the object.