D3js How to pass dynamic parameters in a GET request to a PHP script that returns JSON?

Question

D3js How to pass dynamic parameters in a GET request to a PHP script that returns JSON?

I have been writing the same messages and API documentation for hours, and I just can't get this combination correctly. I am using D3JS v4.

I need to send a variable number of parameters in a PHP script that will return json to me. At the moment, the only way I was able to pass my parameters is to combine the URLs together, which is unrealistic. Sort of:

var id = 12345;
var type = foo;
var url = "getNetworkData.php?id="+id+"&type="+type;
d3.json(url, function (error, data) {
    if (error) throw error;                
    buildNetwork(data);
})

I tried using the following:

d3.request(url)
    .mimeType("application/json")
    .response(function(xhr) { return JSON.parse(xhr.responseText); })
    .get( { 'id': id , 'type':type } , function (error, data) {
        if (error) throw error;                
        buildNetwork(data);
    }
);

Or:

var url = "getNetworkData.php";    
d3.json(url, function (error, data) {
    if (error) throw error;                
    buildNetwork(data);
 })
.send("GET","id=12345");