1.在您的网页中包含Jquery库.
例如：

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>

2.单击按钮调用功能

<button type="button" onclick="create()">Click Me</button>

3.点击按钮,在javascript中调用create function.

<script>
    function create () {
          $.ajax({
            url:"test.PHP",//the page containing PHP script
            type: "post",//request type,dataType: 'json',data: {registration: "success",name: "xyz",email: "abc@gmail.com"}
            success:function(result){

             console.log(result.abc);
           }
         });
     }
<script>

在服务器端test.PHP文件中,应该读取动作POST参数和相应的值并在PHP中执行操作并以json格式返回,例如：

$regstration = $_POST['registration'];
$name= $_POST['name'];
$email= $_POST['email'];

if ($registration == "success"){
 // some action goes here under PHP
 echo json_encode(array("abc"=>'successfuly registered'));
}