Rss парсер - PHP-Fusion SF Russian Support Site



if(substr_count($_SERVER['REQUEST_URI'],'faq.php') > 0 ) {

openside("новости с сайта такого-то");



$cashe_filename = $_SERVER['DOCUMENT_ROOT']."/faq.txt";



// wrap string by len, save existing words

function wrap_by_len($str, $max_len, $endimiter = '…')

{ 

  if( strlen($str) <= ($max_len - strlen($endimiter)) ) return $str ;



  $result_str = '';

  $words = explode(" ", $str);

  $max_len -= strlen($endimiter);



  for( $i =  0; strlen($result_str) < $max_len; $i++ )

    $result_str .= $words[$i].' ';



  $result_str = rtrim($result_str," ,");



  return $result_str.$endimiter ;

}



/**********************************************************

 * Parse XML data into an array structure                 *

 * Usage: array parse_rss ( string data )                 *

 **********************************************************/

function parse_rss($reg_exp, $xml_data) {

    preg_match_all($reg_exp, $xml_data, $temp);

    return array(

        'count'=>count($temp[0]),

        'title'=>$temp[1],

        'link'=>$temp[2],

        'desc'=>$temp[3]

    );

  }



/**********************************************************

 * Parse Array data into an HTML structure                *

 * Usage: string parse_rss ( array data )                 *

 **********************************************************/

function output_rss($pattern, $rss_data, $counter, $maxlen ) 

{

    $result = '';



    for($i=0; $i<$rss_data['count'] && $i<$counter; $i++) 

    {

      $rss_data['desc'][$i] = wrap_by_len($rss_data['desc'][$i], $maxlen);



      $result .= sprintf($pattern,

                       $rss_data['link'][$i],

                       html_entity_decode($rss_data['title'][$i]),

                       html_entity_decode($rss_data['desc'][$i])

        );

    }

    return $result ;

}



/**********************************************************

 * Settings                                               *

 **********************************************************/

$cashe_good_time = 3600;  // in seconds

$counter = 6;

$maxlen  = 300;

$url     = 'http://адрес ленты';



$reg_exp  = '#<item>.*?<title>(.*?)<\/title>.*?';

$reg_exp .='<link>(.*?)<\/link>.*?<description>';

$reg_exp .='(.*?)<\/description>.*?<\/item>#si';



$pattern = '<p><noindex><a rel="nofollow" target="_blank" href="%s">%s</a></noindex><br>%s</p>';



/**********************************************************

 * Main script                                            *

 **********************************************************/



$refresh_cashefile = true ;

$data_is_output    = false ;



// check cashe file modifications if file exist nad readalbe

if( file_exists($cashe_filename) )

{

   $fileage = time() - filemtime( $cashe_filename ); 



   // good cashe state, out cashe content and out here 

   if( $fileage < $cashe_good_time ) 

   {

     $refresh_cashefile = false ;

     echo file_get_contents($cashe_filename);

     $data_is_output    = true ;

   }

}



if( !$data_is_output )

{

  if( $xml_data = file_get_contents($url) ) 

  {

    $rss_data = parse_rss($reg_exp, $xml_data);

    $content  = output_rss($pattern, $rss_data, $counter, $maxlen);

	

   /* if( extension_loaded('mb_string') ) 

      $content = mb_convert_encoding($content, "utf-8", "windows-1251");

    elseif( extension_loaded('iconv') ) 

      $content  = iconv('utf-8', 'windows-1251', $content); */

	  

    // need refresh cashe file' content

    if( $refresh_cashefile )

    {

      $fp = fopen($cashe_filename, "w"); 



      if( $fp )

      {

        fwrite($fp, $content); 

        fclose($fp); 

      }

    }



    // out content

    echo $content ;

  }

}

closeside();

}