如何從像asp.net mvc3中的網址提取數據？

有沒有什麼辦法像Facebook那樣從url中提取數據？如何從像asp.net mvc3中的網址提取數據？

我引用了很多鏈接，但這是使用php代碼。這 - http://www.99points.info/2010/07/facebook-like-extracting-url-data-with-jquery-ajax-php/

http://www.9lessons.info/2010/06/facebook-like-extracting-url-data-with.html

www.webinfopedia.com/extract-meta-data-from-url-using-php.html

我想要實現這樣的。我怎麼能在我的asp.net mvc3應用程序中實現這個？

我只是refered這個-www.achari.in/facebook-like-url-data-extract-using-jquery 在此我不明白他們在PHP代碼都做了，誰能解釋一下這段代碼，什麼他們在這做過？

在此， index.php文件有

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> 
<title>achari.in - Demo - Facebook Like URL data Extract Using jQuery PHP and Ajax</title> 

<link rel="stylesheet" href="css/style.css" type="text/css"> 
<script type="text/javascript" src="js/jquery-1.2.6.min.js"></script> 
<script type="text/javascript" src="js/jquery.livequery.js"></script> 
<script type="text/javascript" src="js/jquery.watermarkinput.js"></script> 
</head> 
<script type="text/javascript"> 
    $(document).ready(function(){ 
     // delete event 
     $('#attach').livequery("click", function(){ 

      if(!isValidURL($('#url').val())) 
      { 
       alert('Please enter a valid url.'); 
       return false; 
      } 
      else 
      { 
       $('#load').show(); 
       $.post("includes/fetch.php?url="+$('#url').val(), { 
       }, function(response){ 
        $('#loader').html($(response).fadeIn('slow')); 
        $('.images img').hide(); 
        $('#load').hide(); 
        $('img#1').fadeIn(); 
        $('#cur_image').val(1); 
       }); 
      } 
     }); 
     // next image 
     $('#next').livequery("click", function(){ 

      var firstimage = $('#cur_image').val(); 
      $('#cur_image').val(1); 
      $('img#'+firstimage).hide(); 
      if(firstimage <= $('#total_images').val()) 
      { 
       firstimage = parseInt(firstimage)+parseInt(1); 
       $('#cur_image').val(firstimage); 
       $('img#'+firstimage).show(); 
      } 
     }); 
     // prev image 
     $('#prev').livequery("click", function(){ 

      var firstimage = $('#cur_image').val(); 

      $('img#'+firstimage).hide(); 
      if(firstimage>0) 
      { 
       firstimage = parseInt(firstimage)-parseInt(1); 
       $('#cur_image').val(firstimage); 
       $('img#'+firstimage).show(); 
      } 

     }); 
     // watermark input fields 
     jQuery(function($){ 

      $("#url").Watermark("http://"); 
     }); 
     jQuery(function($){ 

      $("#url").Watermark("watermark","#369"); 

     }); 
     function UseData(){ 
      $.Watermark.HideAll(); 
      $.Watermark.ShowAll(); 
     } 

    }); 

    function isValidURL(url){ 
     var RegExp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/; 

     if(RegExp.test(url)){ 
      return true; 
     }else{ 
      return false; 
     } 
    } 

    function confirmQuit() 
    { 
     var response = confirm('do you wish to close window !');   
     if(response === true) 
      { 
      return true; 
      } 
     else { 
      return false; 
     } 
    } 
</script> 
<body> 
<div align="center"> 
<br clear="all" /><br clear="all" /> 
<div style="font-size:30px;">Facebook Like URL data Extract Using jQuery PHP and Ajax</div> 
<br clear="all" /> 
<a style="color:#000000; font-size:14px" href="#">Back To Tutorial</a> 
<br clear="all" /> 

<input type="hidden" name="cur_image" id="cur_image" /> 
<div class="wrap" align="center"> 

    <div class="box" align="left"> 

     <div class="head">Link</div> 
     <div class="close" align="right"> 
      <div class="closes" onclick="if(confirmQuit() == true) { window.close(); }"></div> 
     </div> 

     <br clear="all" /><br clear="all" /> 

     <input type="text" name="url" size="64" id="url" /> 
     <input type="button" name="attach" value="Attach" id="attach" /> 
     <br clear="all" /> 

     <div id="loader"> 

      <div align="center" id="load" style="display:none"><img src="images/load.gif" /></div> 

     </div> 
     <br clear="all" /> 
    </div> 

</div> 
</div> 
    <br clear="all" /> 
</body> 
</html>

上面的代碼是UI部分和

fetch.php 
    <?php 

    $url = $_REQUEST['url']; 
$url = checkValues($url); 

function checkValues($value) 
{ 
    $value = trim($value); 
    if (get_magic_quotes_gpc()) 
    { 
     $value = stripslashes($value); 
    } 
    $value = strtr($value, array_flip(get_html_translation_table(HTML_ENTITIES))); 
    $value = strip_tags($value); 
    $value = htmlspecialchars($value); 
    return $value; 
} 

function fetch_record($path) 
{ 
    $file = fopen($path, "r"); 
    if (!$file) 
    { 
     exit("Problem occured"); 
    } 
    $data = ''; 
    while (!feof($file)) 
    { 
     $data .= fgets($file, 1024); 
    } 
    return $data; 
} 

$string = fetch_record($url); 


/// fecth title 
$title_regex = "/<title>(.+)<\/title>/i"; 
preg_match_all($title_regex, $string, $title, PREG_PATTERN_ORDER); 
$url_title = $title[1]; 

/// fecth decription 
$tags = get_meta_tags($url); 

// fetch images 
$image_regex = '/<img[^>]*'.'src=[\"|\'](.*)[\"|\']/Ui'; 
preg_match_all($image_regex, $string, $img, PREG_PATTERN_ORDER); 
$images_array = $img[1]; 

?> 

    <div class="images"> 
    <?php 
    $k=1; 
    for ($i=0;$i<=sizeof($images_array);$i++) 
    { 
     if(@$images_array[$i]) 
     { 
      if(@getimagesize(@$images_array[$i])) 
      { 
       list($width, $height, $type, $attr) = getimagesize(@$images_array[$i]); 
       if($width >= 50 && $height >= 50){ 

       echo "<img src='"[email protected]$images_array[$i]."' width='100' id='".$k."' >"; 

       $k++; 

       } 
      } 
     } 
    } 
    ?> 
    <!--<img src="ajax.jpg" alt="" />--> 
    <input type="hidden" name="total_images" id="total_images" value="<?php echo --$k?>" /> 
    </div> 
    <div class="info"> 

     <label class="title"> 
      <?php echo @$url_title[0]; ?> 
     </label> 
     <br clear="all" /> 
     <label class="url"> 
      <?php echo substr($url ,0,35); ?> 
     </label> 
     <br clear="all" /><br clear="all" /> 
     <label class="desc"> 
      <?php echo @$tags['description']; ?> 
     </label> 
     <br clear="all" /><br clear="all" /> 

     <label style="float:left"><img src="images/prev.png" id="prev" alt="" /><img src="images/next.png" id="next" alt="" /></label> 

     <label class="totalimg"> 
      Total <?php echo $k?> images 
     </label> 
     <br clear="all" /> 

    </div>

我不知道PHP所以任何人可以幫我找到這個解決方案？

在上面的代碼中使用此功能

function fetch_record($path) 
{ 
$file = fopen($path, "r"); 
if (!$file) 
{ 
    exit("Problem occured"); 
} 
$data = ''; 
while (!feof($file)) 
{ 
    $data .= fgets($file, 1024); 
} 
return $data; 
}

有誰能夠告訴我究竟是什麼在此代碼什麼是使用的文件在這個開放的，這是用於讀取URL索引文件？

來源

2011-11-02 Debugmode