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È˾ùÒ³Ãæ·ÃÎÊÁ¿£¨ÔÂÆ½¾ùÖµ£©¡£
˼·£ºÊ¹ÓÃget_file_contentsÌáÈ¡³öÍøÒ³ÄÚÈÝ£¬ÔÙ¸ù¾ÝÕýÔò±í´ïʽ½øÐÐÄÚÈݵÄɸѡ¡£
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<?php
/*
 the function of getting aleax data
 @param string partten  ;the url set
 @return array partten ;
*/
 function get_alexa_data($url)
 {
  $a_url = explode(PHP_EOL,$url);
  
  $index = count($a_url);
  if(function_exists('file_get_contents'))
  {
   $result = array();
   $pattern = "|<div\\sclass=\"data[^\"]+?\">[^>]*?>[^>]*?([\\d,]+)\\s*?</div>[\\S\\s]*?id=\"reach[\\S\\s]*?<th>1".
"\\smonth[\\S\\s]*?class=\"avg.*?([\\d\\.]+)</td[\\S\\s]*?id=\"pageviews_per_user\"[\\S\\s]*?".
"1\\smonth[\\S\\s]*?class=\"avg.*?([\\d\\.]+)</td|";
   
   for($i = 0; $i < $index; $i++)
   {
    if(!empty($a_url[$i]))
    {
     $content = file_get_contents('http://www.alexa.com/siteinfo/'.$a_url[$i]);
     if(!preg_match($pattern,$content,$result[$a_url[$i]]))
      $result[$a_url[$i]]=array('Not Found','Not Found','Not Found','Not Found');
    }
   }
  }
  else
   die("the function file_get_contents not found!");
  return $result;
 }
?>
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ÉÏÃæº¯ÊýʹÓõÄǰÖÃÌõ¼þÊÇ£ºalexaÌṩµÄ²éÑ¯ÍøÖ·¸ñʽ'http://www.alexa.com/siteinfo/‘²»±ä¡£
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<table>
<tr>
<td>site</td><td>È«ÇòÅÅÃû</td><td>Óû§Á¿(ÔÂÆ½¾ùÖµ)</td><td>È˾ùÒ³Ãæ·ÃÎÊÁ¿(ÔÂÆ½¾ùÖµ)</td>
</tr>
<?php
 $alexa = get_alexa_data($_POST['url']);
 
 foreach($al


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