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How to display telephone number and detail  after customer login in magento using API.

<?php
/* customer Loggin Code */


require_once("../../app/Mage.php");
umask(0);
Mage::app('default');
ini_set('display_errors', 1);
ob_start();
session_start();

    /* inputs */
   
    $email = $_REQUEST['email'];
    $password = $_REQUEST['password'];
   
    /* inputs */
   
    Mage::getSingleton("core/session", array("name" => "frontend"));   
    $websiteId = Mage::app()->getWebsite()->getId();
    $store = Mage::app()->getStore();
    $customer = Mage::getModel("customer/customer");   
    $customer->website_id = $websiteId;
    $customer->setStore($store);       
    try
    {       
        $customer->loadByEmail($email);
        $session = Mage::getSingleton('customer/session')->setCustomerAsLoggedIn($customer);       
        $session->login($email, $password);
        $customerData = Mage::getModel('customer/customer')->load($session->getId())->getData();
        $customer_id=$customerData['entity_id'];//for getting the customer ID.
        $visitorData = Mage::getModel('customer/customer')->load($customer_id);
        $billingaddress = Mage::getModel('customer/address')->load($visitorData->default_billing);
        $addressdata = $billingaddress ->getData();//for getting the billingaddress
        json_encode($customerData['email']);
       
        if($customerData['email']):                        /*     checking db emails      */
            $result['status'] = 'logged in';
            $resphone['phone']=$addressdata['telephone'];
            $get=array_merge($resphone,$customerData);
            $result['getdata']=$get;
            echo json_encode($result);           
        else:
             $result = array('status' => 'notloggedin' , 'msg' => 'Invalid Email or Password!');
            echo json_encode($result);
        endif;
    }
    catch(Exception $e){
             $result = array('status' => 'notloggedin' , 'msg' => 'Invalid Email or Password!');
            echo json_encode($result);
    }
   

?>