Here is a process whether you can grab data from HTML/XHTML source using XPath and cURL.

The Basic Xpath Class:

Class xpath{
	public $html;
	public $patten;
	public $childnodes = 0;
	public $attribute = 0;
	public $forbidden = 0;
	public $search = 0;
	public $br2nl = 1;
	public $return = "string";
	public $charset = "utf8";
	private $retrund;
	
	function __construct($html, $patten){
		$this->html = $html; 
		$this->patten = $patten;
	}
	public function execute(){
		$xpath = new DOMXPath($this->html); 
		$basenodes = $xpath->query($this->patten);
		foreach ($basenodes as $basenode){
			if($this->childnodes){
				foreach($basenode->childNodes as $childnode){
					$this->buffer($childnode);
				}
			}else{
				$this->buffer($basenode);
			}
		}
	}
	private function buffer($value){
		$preparedvalue = $this->prepare($value);
		if($preparedvalue){
			if($this->returnstring()){ 
				$this->returnd .= $preparedvalue;
			}else{
				$this->returnd[] = $preparedvalue;
			}
		}
	}
	private function returnstring(){
		if($this->return == "string"){
			return true;
		}else{
			return false;
		}
	}
	private function returnutf8(){
		if($this->charset == "utf8"){
			return true;
		}else{
			return false;
		}
	}
	private function prepare($before){
		if($before->tagName == "br" AND $this->br2nl){
			$before = "\n";
		}else{
			if($this->attribute){
				if($this->search){
					if(in_array($before->textContent, $this->search)){
						$before = $before->getAttribute($this->attribute);	
					}else{
						$before = 0;
					}
				}else{
					$before = $before->getAttribute($this->attribute);
				}
			}else{
				if($this->search){
					if(in_array($before->textContent, $this->search)){
						$before = trim($before->textContent);
					}
				}else{
					$before = trim($before->textContent);
				}
			}
		}
		if(!$this->returnutf8()){
			$before = utf8_decode($before);
		}
		if($this->forbidden){
			if(in_array($before, $this->forbidden)){
				return false;
			}else{
				return $before;
			}
		}else{
			return $before;
		}
	}
	public function get(){
		return $this->returnd;
	}
}

We have to create xpath object to grab data using HTML ids/classes as nodes. At first, We need to grab page source using PHP cURL. When you have that source you can easily filter data using attributes/nodes.

Here is the example of fetching data using node and the process of reading HTML attributes.

	$grab_path = trim("Your URL goes here");
				
	$grab_path = str_replace("&","&",$grab_path);
	$url = urlencode($grab_path);
	$html = new DOMDocument(); 
	$html->loadHtmlFile($url); 
	
    $description = new xpath($html, '//div[@class="body_container"]'); // div id name
    $description->return = "string";
    $description->childnodes = 1;
    $description->forbidden = array("Body");
    $description->execute();

    $title = new xpath($html, '//h1'); //Grab h1 data 
    $title->execute();

    $image = new xpath($html, '//*[@id="main_image"]'); //Grab Images
    $image->attribute = "src";
    $image->execute();

    $adparams = new xpath($html, '//table[@class="params UnderlinedLinks"]/tr[1]/td[1]'); //fetch tables
    $adparams->childnodes = 1;
    $adparams->return = "array";
    $adparams->execute();

   $info[] = array(
		'title_name' => $title->get(), 
		'image' => $image->get(), 
	);

At last I find a solution in PHP to solve that problem, by using “mb_convert_encoding” we can convert encoding type at the insertion time.

$field = mb_convert_encoding($field,"iso-8859-1","utf-8");
	
@mysql_query("insert into table (field) values ('$field')");

This function will also work for other unicode character like spanish, Frecnch etc.

<?php	
class BreadcrumbComponent extends Object
{
  var $controller;
  var $components = array('Session','Acl');

  function startup(&$controller)
  {
    $this->controller =& $controller; 
  }
    
	function setBreadcrumb($url)
	{
		$crumbs = split('/',$url);
		$link = '/';
		
		if($crumbs[0] != 'admin')
		{
			$breadcrumb[] = array('home', $link);
		}
		
		foreach($crumbs AS $crumb)
		{
			$name = str_replace('_',' ', $crumb);
			$link .= $crumb.'/';
			if($name && !is_numeric($name))
			{
				$breadcrumb[] = array($name,$link);
			}
			elseif(is_numeric($name))
			{
				$key = count($breadcrumb)-1;
				$breadcrumb[$key][1].= $name;
			}
		}
		
		return $breadcrumb;
	}
	
}
?>

Load the Component:

var $components = array( 'Breadcrumb');

Call from the controller:

function beforeRender()
	{
		$this->set('breadcrumb', $this->Breadcrumb->setBreadcrumb($this->params['url']['url']));
	}

This need to be modified according to sitemap

public function download ($file_path = "")
	{
			$this->load->helper('download'); //load helper
			
			//$file_path = $this->input->post("file_path",TRUE);
			
			$layout="no_theme"; //if you have layout
			
			$data['download_path'] = $file_path;		
						
			$this->load->view("view file",$data);
			redirect("same url", "refresh");						
					
	}

In view section, just call the download function thats it.

	if( ! empty($download_path))
	{
		$data = file_get_contents(base_url() ."/...path.../".$download_path); // Read the file's contents
		$name = $download_path;

		force_download($name, $data);

	}

Its the most simple process to download using CodeIgniter

	/**
     * Function: URL_shortener
     *
     * @description : Create a shorten URl from a long URL
     * @param  $ : $url
     * @return : none
     * @author : sumon.
     * @last -modified-by: sumon.
     */

	function URL_shortener($url ="")
	{
		$api_data = file_get_contents("http://api.bit.ly/shorten?version=2.0.1&longUrl=".$url."&login=bitlyapidemo&apiKey=R_0da49e0a9118ff35f52f629d2d71bf07");
		$array_data = json_decode($api_data);
		$result = $array_data->results;
		
		foreach($result as $results)
		{
			$short_url = $results->shortUrl;
		}
		return $short_url;
	}
	
	

It’s too simple to call that API.

There is a awesome Client Library in PHP distributed by Zend is a part of zend framework which is very effective and powerful class to retrieve that from Google. This can be easily integrated with Codeigniter.
Here I share a Class which is very useful to Grad data from Youtube using Gdata class with Codeigniter.

<?php

class Youtube extends Controller
{
	public $layout="default";
	
	function __construct()
	{
		parent::Controller();
		$this->load->library("zend");
		$this->zend->load("Zend/Gdata/YouTube");
		
		$youtube = new Zend_Gdata_YouTube();
		$this->lang->load("resource");
		$this->load->helper("text");
	}

	function index()
	{
	
		//$youtube = new Zend_Gdata_YouTube();
		
		//Grab Video data
		$videoEntry = $youtube->getVideoEntry('video_code');
		
		//Grab Channel data
		$this->getAndPrintUserUploads("youtube_channel_name");
		
		$this->load->view('youtube_view', $data);
	}
	
	function getAndPrintUserUploads($userName)                    
	{     
		  $youtube = new Zend_Gdata_YouTube();
		  $youtube->setMajorProtocolVersion(2);
		  $this->printVideoFeed($youtube->getuserUploads($userName),$page=1,$page_counter=1);
	}  
		
	function printVideoFeed($videoFeed)
	{
		  $data['no_sidebar'] = true;
		  $count = 1;
		  
		  foreach ($videoFeed as $videoEntry) 
		  {
			
				//$this->printVideoEntry($videoEntry);
				$video_info[$count]['title'] = $videoEntry->getVideoTitle();
				$video_info[$count]['id']    = $videoEntry->getVideoId();
				$video_info[$count]['desc']  = $videoEntry->getVideoDescription();
				$video_info[$count]['tags']  = implode(", ", $videoEntry->getVideoTags());
				$video_info[$count]['updated']  = $videoEntry->getUpdated();
				$video_info[$count]['category']  = $videoEntry->getVideoCategory();				
				
				$count++;
		  }
		//pre($video_info);
		
		$data['video_info'] = $video_info;
		$this->load->view("resources/youtube_list_view",$data);
	}
	
		
	
	function printVideoEntry($videoEntry) 
	{
	  // the videoEntry object contains many helper functions
	  // that access the underlying mediaGroup object
	  echo 'Video: ' . $videoEntry->getVideoTitle() . "<br>";
	  echo 'Video ID: ' . $videoEntry->getVideoId() . "<br>";
	  echo 'Updated: ' . $videoEntry->getUpdated() . "<br>";
	  echo 'Description: ' . $videoEntry->getVideoDescription() . "<br>";
	  echo 'Category: ' . $videoEntry->getVideoCategory() . "<br>";
	  echo 'Tags: ' . implode(", ", $videoEntry->getVideoTags()) . "<br>";
	  echo 'Watch page: ' . $videoEntry->getVideoWatchPageUrl() . "<br>";
	  echo 'Flash Player Url: ' . $videoEntry->getFlashPlayerUrl() . "<br>";
	  echo 'Duration: ' . $videoEntry->getVideoDuration() . "<br>";
	  echo 'View count: ' . $videoEntry->getVideoViewCount() . "<br>";
	  echo 'Rating: ' . $videoEntry->getVideoRatingInfo() . "<br>";
	  echo 'Geo Location: ' . $videoEntry->getVideoGeoLocation() . "<br>";
	  echo 'Recorded on: ' . $videoEntry->getVideoRecorded() . "<br>";
	  
	  // see the paragraph above this function for more information on the 
	  // 'mediaGroup' object. in the following code, we use the mediaGroup
	  // object directly to retrieve its 'Mobile RSTP link' child
	  foreach ($videoEntry->mediaGroup->content as $content) {
		if ($content->type === "video/3gpp") {
		  echo 'Mobile RTSP link: ' . $content->url . "<br>";
		}
	  }
  
  echo "Thumbnails:<br>";
  $videoThumbnails = $videoEntry->getVideoThumbnails();

		  foreach($videoThumbnails as $videoThumbnail) {
			echo $videoThumbnail['time'] . ' - ' . $videoThumbnail['url'];
			echo ' height=' . $videoThumbnail['height'];
			echo ' width=' . $videoThumbnail['width'] . "<br>";
		  }
	}

}

?>

There is another way to grab youtube data from youtube Channel that is grabbing from API feed. Which is another easy process.

/**
 * Function: youtube data grabber
 *
 * @description :
 * @param  $ : video code, url type (embed/url)
 * @return : data array
 * @author : Mamun.
 * @last -modified-by: Mamun.
 */
if (! function_exists('youtube_data_grabber' ))
{

		function youtube_data_grabber($video_code, $link_type = "embed")
		{
				if ($video_code != '')
				{
					if ($link_type == "embed")
					{
						$splited_data = explode("=",$video_code);
						$video_unique_code = substr(strrchr($splited_data[4],"/"),1,-strlen(strrchr($splited_data[4],"&")));

					}
					else if ($link_type == "url")
					{
						$splited_data = explode("=",$video_code);
						$video_unique_code = substr($splited_data[1],0,-strlen(strrchr($splited_data[1],"&")));
					}
					else
					{
						return;
					}

						// set feed URL
						$feedURL = 'http://gdata.youtube.com/feeds/api/videos/'.$video_unique_code;

						// read feed into SimpleXML object
						$sxml = simplexml_load_file($feedURL);

					return $sxml;
				}

		}
}

Function Body:

/**
* Function: youtube thumb grabber
*
* @description :
* @param  $ : video code, url type (embed/url),size (small/Large),thumb link
* @return : thumb path
* @author : Mamun.
* @last -modified-by: Mamun.
*/
if (! function_exists('youtube_thumb_grabber' ))
{

     function youtube_thumb_grabber($video_code, $link_type = "embed", $size = "small", $thumb_link = "")
    {
            if ($video_code != '')
            {
                   if ($link_type == "embed")
                   {

                                  $splited_data = explode("=",$video_code);

                                  $video_unique_code = substr(strrchr($splited_data[4],"/"),1,-strlen(strrchr($splited_data[4],"&")));

                  }
                  else if ($link_type == "url")
                  {
                                  $splited_data = explode("=",$video_code);
                                  $video_unique_code = substr($splited_data[1],0,-strlen(strrchr($splited_data[1],"&")));
                  }
                  else
                  {
                                  return;
                  }

                  if($size == "small")
                  {
                            return "<a href=\"$thumb_link\"><img src=\"http://img.youtube.com/vi/$video_unique_code/2.jpg\" alt=\"No image\" /></a>";
                  }
                  else if ($size == "large")
                  {
                            return "<a href=\"$thumb_link\"><img src=\"http://img.youtube.com/vi/$video_unique_code/0.jpg\" alt=\"No image\" /></a>";
                  }
                  else
                  {
                            return "<a href=\"$thumb_link\"><img src=\"http://img.youtube.com/vi/$video_unique_code/2.jpg\" alt=\"No image\" /></a>";

                   }

             }

      }
}

Calling Function:

<?php 

echo youtube_thumb_grabber($video["video_code"],"embed","small","resources/videos/view/".$video["video_title_url"]);

?>

Its Cool.

Jquery Call:

$(function() {
       $('.auto-submit-star').rating({
            required: true,
            callback: function(value, link) {

            $.ajax({
                     type: "post",
                     url: site_url + "user/view/star",
                     dataType: "json",
                     data: "&video=" + $('#video_url').val() + "&rate_val=" + value,

              success: function(e) {
                   $.jGrowl(e.code + "<br>" + e.msg);
               }
         });
     }
});

Controller Method:

public function star()
    {
        $rate = $this->input->post("rate_val", true);
        $video_url = $this->input->post("video", true);
        $this->load->model("Model Name");
        $video_id = $this->model_name->get_video_id($video_url);
        unset($this->layout); //Block template Layout
        if (get_user_id())   //get_user_id() return login user id
        {
            if (!$this->model_name->is_video_rated(get_user_id(), $video_id))
            {
                $data = array("video_id" => $video_id,
                    "user_id" => get_user_id(),
                    "videos_rating_value" => $rate,
                    "videos_rating_date" => "" . date("Y-m-d H:i:s") . ""
                    );
                if ($this->model_name->insert_rating($data, $video_id, $rate))
                {
                    echo json_encode(array("code" => "Success", "msg" => "Your Video Rating has been posted"));
                }
                else
                {
                    echo json_encode(array("code" => "Error", "msg" => "There was a problem rating your video"));
                }
            }
            else
            {
                echo json_encode(array("code" => "Error", "msg" => "You have already rated this video"));
            }
        }
        else
        {
            echo json_encode(array("code" => "Error", "msg" => "You have to login to rate the video"));
        }
        exit(0);
    }

Presentation View:

    if (!get_user_id()) //Check if user logged in
    {
        $radio_level = "disabled";
    }
    else
    {
        $radio_level = " ";
    }

    for($i = 1;$i <= 5;$i++)
    {
        if ($i == round($row["total_rate"]))
        {
       ?>
       <input class="auto-submit-star" type="radio" name="rating" <?php echo "$radio_level";

            ?> value="<?php echo $i;

            ?>" checked="checked"/>
	<?php
        }
        else
        {
         ?>
	<input class="auto-submit-star" type="radio" name="rating" <?php echo "$radio_level";

            ?> value="<?php echo $i;

            ?>"/>
   <?php
        }
    } //end of for
?>
    

Its a very cool rating JQuery plugins.
For demo click

The command:

LOAD DATA LOCAL INFILE 'Drive Letter:\\\file_name.csv'
into TABLE table_name
FIELDS TERMINATED BY ','
LINES TERMINATED BY '\n'
(field1,field2,field3)

Be careful about the “\\\” after drive letter and the data type for MySQL table fields. data type should be set according
to CSV data format.