fetching metadata of web page

[mangel.murti]

hi all,

i have problem i am fetching meta data information of web page so that on the basis of those information i can put search option to my site.i have populate.php which fetch metadata and store relevant information in mysql.
but when i am running populate.php it's giving me error to me
i have to pass a url with populate.php?url=www.some.com

Warning: get_meta_tags[function.get-meta-tags]: failed to open stream: No such file or directory in
Warning: Invalid argument supplied for foreach() in /home/jaguide/public_html/populate.php on line 40

$url=$_GET['url'];
$url = addslashes($url);
$tags=get_meta_tags($url);//echo $tags;
if (sizeof($tags) == 0){
    echo '<tr><td>No META information was found!</td></tr>';
  }
  else
  {

if(!$url)
{
   //die( "You need to define a URL to process." );
}
else if(substr($url,0,7) != "http://" )
{
   $url = "http://$url";
}

/* Does this URL already have a record in the page-table? */
$result = mysql_query("SELECT table FROM page WHERE page_url = \"$url\"");
$row = mysql_fetch_array($result);

if( $row['page_id'] )
{
   /* If yes, use the old page_id: */
   $page_id = $row['page_id'];
}
else
{ 
	$desc="";
 	foreach($tags as $key=>$value)
	   if($key=="description")
   			$desc=$value;
   mysql_query("INSERT INTO table(page_url,description) VALUES (\"$url\", '".$desc."' )");
	$page_id = mysql_insert_id();
}

	 foreach($tags as $key=>$desc)
	 {
		if($key=="keywords")
		{
         $result = mysql_query("SELECT word_id FROM word WHERE word_word = '$value'");
         $row = mysql_fetch_array($result);
         if( $row['word_id'] )
         {
            /* If yes, use the old word_id: */
            $word_id = $row['word_id'];
         }
         else
         {
            /* If not, create one: */
            mysql_query("INSERT INTO table(word_word) VALUES (\"$value\")");
            $word_id = mysql_insert_id();
         }

         /* And finally, register the occurrence of the word: */
         mysql_query("INSERT INTO table (word_id,page_id) VALUES ($word_id,$page_id)");
        // print "Indexing: $cur_word<br>";
		}
      }
 }