如何在没有页面重新加载的情况下使用php和codeigniter发布和获取数据

I am beginner in codeigniter MVC.

Question: How to send and receive data using codeigniter and PHP without page refresh or reload.

NOTE: Please give some MVC examples using either ajax or jquery or both.

There are many tutorials in google about this. But here is the simple example using CodeIgniter and Jquery:

  1. Create a file named test_controller.php in your controller folder. Put this code:

    <?php
class Test_controller extends CI_Controller {
        public function index() 
        {
                $this->load->view("test_view"); 
        }

        public function do_ajax()
        {
                $name=$this->input->post("name"); //get posted data
                echo "Hello $name, I am AJAX"; //return response
        }

}

  2. Create a file named test_view in your View folder. Put this code:

    <html>
        <head>
                <script src="http://code.jquery.com/jquery-1.10.2.min.js" type="text/javascript"></script>
                <script>
                        function getpost_ajax() {
                                var name=$("#name").val();

                                //begin ajax
                                $.post("<?php echo site_url('stack/test_controller/do_ajax'); ?>", { 
                                        //data to post
                                        name:name
                                }, function(data){
                                        //on success, alert the data
                                        alert(data)                                                        
                                });
                        }
                </script>
        </head>
        <body>
                <input type="text" id="name" />
                <input type="button" onclick="getpost_ajax()" value="GO!"/>
        </body>
</html>

  3. Open in your browser: http://localhost/your_site_folder/index.php/test_controller. Fill the textbox with any data, and then click GO!. It will post the data from the textbox, and alert the response.