Ajax $current_user info returning false

I have an ajax login function that worked locally, but now that it’s on a live server it returns false for any user information.

for example. I am sending back an array to the device with something like
[[“TRUE”,1,”username”,”[email protected]”]]

when posting via ajax I get the following returned.
[[“TRUE”,0,false,false]]

I have tried various methods of POST and GET to no avail. As I said, the code as is worked locally, but not on a remote server. I was considering a cross domain issue, but I test with cordova which inherently has crossdomain enabled as well as a modified developer version of google chrome that allows cross domain.

I have inserted the code below. Any help would be greatly appreciated.

PHP
function already_logged_in()

{

	global $current_user;
      get_currentuserinfo();

	$creds = array();

	$auth_resp = "TRUE";

	$creds_id = $current_user->ID;

	$img_url_temp = $current_user->ID;

	$creds_login = $current_user->user_login;

	$creds_pass = 'correct';

	$creds_email = $current_user->user_email;

	$creds_role = $current_user->user_level;

	$creds_fname = $current_user->user_firstname;

	$creds_lname = $current_user->user_lastname;

	$creds_dispname = $current_user->display_name;

	$creds_imgurl = get_av_url($creds_id);

	$creds_coverurl = get_cover_url($creds_id);

	$creds_array = array($auth_resp,$creds_id,$creds_login,$creds_pass,$creds_email,$creds_role,$creds_fname,$creds_lname,$creds_dispname,$creds_imgurl,$creds_coverurl);

header("Content-Type: application/json");

	array_push($creds, $creds_array);

	echo json_encode($creds);

	die();

}

function login()

{	

	header("Content-Type: application/json");

	$creds = array();

	$creds_fail = array();

	$creds['user_login'] = $_GET["username"];

	$creds['user_password'] = $_GET["password"];

	$user_stat = wp_signon($creds, false);

	if (is_wp_error($user_stat))

	{

	$auth_resp = "FALSE";

	$creds_array = array($auth_resp,"0","0","0","0","0","0","0","0");

	array_push($creds_fail, $creds_array);

		echo json_encode($creds_fail);

		die();

	}else{

	already_logged_in();

	}

}

JQUERY

function login()
{
    var username = document.getElementById("username").value;
    var password = document.getElementById("password").value;

    if(username == "")
    {
        alert("Please enter username", null, "Username Missing", "OK");
        return;
    }

    if(password == "")
    {
        alert("Please enter password", null, "Password Missing", "OK");
        return;
    }

    $('#login_loader').css('display', 'block');
    $('#login_loader').fadeTo('fast', 1, function () {
        // Animation complete.
    });
    $('#login_form').css('display', 'none');

    var xhr = new XMLHttpRequest();
    xhr.open("GET", ajaxurl + "?action=login&username=" + encodeURIComponent(username) + "&password=" + encodeURIComponent(password));
    xhr.onload = function(){

		var creds = [];
		var user_info_storage = "";
		var log = "";
		var id = "";

		var login_array = JSON.parse(xhr.responseText);
		var creds_login = "";
		var creds_pass = "";
		var creds_email = "";
		var creds_role = "";
		var creds_fname = "";
		var creds_lname = "";
		var creds_dispname = "";
		var creds_imgurl = "";
		var creds_coverurl = "";

		for(var count = 0; count < login_array.length; count++)
        {
            log = login_array[count][0];
            id = login_array[count][1];
            creds_login = login_array[count][2];
            creds_pass = login_array[count][3];
			creds_email = login_array[count][4];
			creds_role = login_array[count][5];
			creds_fname = login_array[count][6];
			creds_lname = login_array[count][7];
			creds_dispname = login_array[count][8];
			creds_imgurl = login_array[count][9];
			creds_coverurl = login_array[count][10];

		}

		creds.push(log);
		creds.push(id);
		creds.push(creds_login);
		creds.push(password);
		creds.push(creds_email);
		creds.push(creds_role);
		creds.push(creds_fname);
		creds.push(creds_lname);
		creds.push(creds_dispname);
		creds.push(creds_imgurl);
		creds.push(creds_coverurl);

        if(log == "FALSE")
        {
            // alert("Wrong Username and Password", null, "Wrong Creds", "Try Again");
            myApp.addNotification({
                title: 'Login Error',
                subtitle: '',
                message: 'Wrong login or password',
                media: '<i class="trekicons trek-trekfind"></i>'
            });
            $('#login_loader').css('display', 'none');
            $('#login_form').fadeTo('fast', 1, function () {
                // Animation complete.
            });
        }
        else if(log == "TRUE")
        {
			if(id == 0){
				//alert("Incorrect feedback");
				window.setTimeout(login, 1000);
			} else {

            //fetch_and_display_posts();
            //$("#page_two_link").click();
			//$("#testing").html(creds);

			    window.localStorage.setItem("user.info", JSON.stringify([creds]));
			    $('#user_disp_name').html(creds_dispname);
			$('#login_loader').css('display', 'none');
			//$('#login_form').fadeTo('fast', 1, function () {
			    // Animation complete.
			//});
			myApp.closeModal('.popup-login');
			user_check();
			}
        }
    }
    xhr.send();
}