Untitled

<?php

class Xml_insert extends CI_Controller {

function index() {

    $this->load->model('xml_insert_model');
    $data['rows'] = $this->xml_insert_model->getAll();
    $this->load->view('xml_insert_view', $data);
}

function insert() {
    $this->load->model('xml_insert_model');
    $data['rows'] = $this->xml_insert_model->getAll();

    foreach ($data['rows'] as $r) {
        $path1 = $r->xml_file_path;
        $xml = simplexml_load_file($path1);

        $newAct = $_POST['activity'];

        $root = $xml->firstChild;

        $newElement = $xml->createElement('activity');
        $root->appendChild($newElement);
        $newText = $xml->createTextNode($newAct);
        $newElement->appendChild($newText);

        $xml->save('$path1');
        $this->index();
    }
}

}

<!doctype html>
    <html lang="en">
    <head>
 <meta charset="UTF-8">
 <title>Document</title>
    </head>
    <body>
   <?php foreach ($rows as $r): ?>
    <?php
            $path1 = $r->xml_file_path;
            $xml = simplexml_load_file($path1);
    ?>
    <?php  foreach ($xml->children() as $activity) : ?>
    <?php echo "Activity : " . $activity . " <br />"; ?>
    <?php endforeach; ?>
      <?php endforeach; ?>

      <form name="input" action="index.php/xml_insert/insert" method="post">
      insert activity:
      <input type="text" name="activity"/>
      <input type="submit" value="send"/>
      </form>
  </body>
</html>

<?php
    class Xml_insert_model extends CI_Model
    {
      function getAll()
      {

         $q = $this->db->get("XML");

         if ($q->num_rows > 0) {

           foreach ($q->result() as $row) {
              $data[] = $row;
           }

          return $data;
         }
      }
   }

<?xml version="1.0"?>
    <list>
      <activity>swimming</activity>
      <activity>running</activity>
      <activity>Jogging</activity>
      <activity>Theatre</activity>
      <activity>Programming</activity>
  <activity>driving</activity>
  <activity>eating</activity>
    </list>

$xml = new DomDocument();
$xml->load($path1);