Returning a JSON object from PHP in AJAX call?

Question

Here\'s my PHP code called during jQuery AJAX call:

Answer 1

The response you are getting from your PHP script is in plain text. You can however parse that string into an object using $.parseJSON in your callback function:

$.ajax({
    url      : url,//note that this is setting the `url` property to the value of the `url` variable
    data     : {ID:$('#ddlClients').val()},
    type     : 'post',
    success  : function(Result){
            var myObj = $.parseJSON(Result);
            //you can now access data like this:
            //myObj.Address_1
        }
    }
  );

You can let jQuery do this for you by setting the dataType property for your AJAX call to json:

$.ajax({
    url      : url//note that this is setting the `url` property to the value of the `url` variable
    data     : {ID:$('#ddlClients').val()},
    dataType : 'json',
    type     : 'post',
    success  : function(Result){
            //you can now access data like this:
            //Result.Address_1
        }
    }
  );

The above examples expect that the response from the server to be in this format (from your question):

"{"Address_1":"Divisional Office 1","Address_2":"The XYZ Road"}

Answer 2

json_encode accepts objects, so there's no need to do that automatic array-building.:

$row = $result->fetch_object();
echo json_encode($row);

It's as simple as that!

Answer 3

In your $.post call, the last argument could be the data-type: json:

$.post(url, {ID:$('#ddlClients').val()},
    function(Result){
        alert(Result.Address_1);
    },'json'
 );

Everything should work then, as it looks like you are doing everything right.