sending JSON to PHP using jquery ajax

I'm sending a fairly simple compilation of object to a php script using the jQuery's .ajax. I want to extract one value from each object in the PHP script. The javascript is:

var obj = [{id:1, name:"val1"}, {id:2, name:"val2"},{id:3, name:"val3"}];

$.ajax({
            type: "GET",
            url: "call.php",
            contentType: "application/json",
            data: {type: "stream", q: JSON.stringify(obj)},
            success: function(response){
                        alert(response);
                     }
          });

The call.php file is written as:

if($_GET['type']=='stream'){
    $obj = json_decode($_GET['q']);

    for($i=0;$obj[$i];$i++){
    echo $obj[$i]->{'name'}." ";
    }
}

However this returns 0, and I simply cannot figure out why.

Secondly a attempted using type:"POST" in the javascript, and $_POST in php, but that failed altogether.