phonegap pass conate list to mysql

Question

I’m trying to get the contact list from mobile phone and send through ajax and php to mysql. This is the code I’m using:

 document.addEventListener("deviceready", onDeviceReady, false);

    function onDeviceReady() {
        var options = new ContactFindOptions();
        options.filter="";          // empty search string returns all contacts
        options.multiple=true;      // return multiple results
        filter = ["*"]; 
        navigator.contacts.find(filter, onSuccess, onError, options);
    }


function onSuccess(contacts) {  
    for (var i = 0; i < contacts.length; i++){

var phoneNumbers = contacts[i].phoneNumbers;
//alert(JSON.stringify(phoneNumbers));

for (var j=0;j<phoneNumbers.length; j++){
//if(phoneNumbers[j].type == "mobile"){
//alert(phoneNumbers[j].value);

var jsonString = JSON.stringify(phoneNumbers[j].value);


 //var dataString ="title="+jsonString+"&insert=";
 var dataString = JSON.parse(jsonString);


//$("#contactList").append("<li><input type='text' name='box["+i+"]' id='box' value='"+dataString+"'></li>");
$("#contactList").append("<input type='text' name='name[]' id='name' value='"+phoneNumbers[j].value+"'>");
//$("#contactList").listview("refresh");

//}
}
}
}

    function onError(contactError) {
        //alert('onError!');
    }

 AJAX

    var fields = $('#myform').serialize();

    var jsonString = JSON.stringify(fields);
    console.log(fields);
    $.ajax(
    {
        url : "retorno.php",
        type: "POST",
        dataType: "json",
        data: {data : jsonString}, 
        cache: false,
        success:function(data, textStatus, jqXHR) 
        {

$('#stage2').html(data);

        }
    });

});

PHP

$name = $_POST['data'];

If anyone can help, I’d be most grateful.