php file not called from ajax call - php

Question

Have a problem to call my server.php to add some values into db.
server.php:
<?php
$db = new PDO('mysql:host=localhost;dbname=test','user','password');
$name = $_POST['name'];
$email = $_POST['email'];
$phone = $_POST['phone'];
$address = $_POST['address'];
$stmt = $db->prepare("INSERT INTO user (name,email,phone,address) VALUES(?,?,?,?)");
$stmt->bindParam(1,$name);
$stmt->bindParam(2,$email);
$stmt->bindParam(3,$phone);
$stmt->bindParam(4,$address);
$stmt->execute();
echo "data saved";
?>
Calling the server.php directly, the data will be saved.
But from my Html/Ajax code it will not:
<script>
function saveData(){
var name = $('#name').val();
var email = $('#email').val();
var phone = $('#phone').val();
var address = $('#address').val();
$.ajax({
type: "POST",
url: "server.php",
data: "name=" +name+"&email="+email+"&phone="+phone+"&address="+address,
}).done(function(data){
alert('success');
$('#result').html("<br/><div> class='alert alert-info'>" + data +"</div>");
)};
return false;
</script>
The alert('success') won't be called also #result div isn't filled.
Whats wrong with this code?