<?php

class Rss {

public $rssFile;
public $cacheFile;
public $xml;
private $cacheDir;

public function __construct ( $rssFile , $cache = 'on' , $cacheDir = 'cache' )
{
    $this->rssFile   = $rssFile;
    $this->cacheFile = basename ( $this->rssFile );
    $this->cacheDir  = $cacheDir;
    
    if ( empty ( $this->rssFile ) OR empty( $cacheDir ) ) exit;
    
        if ( $cache == 'on' ) {
            if ( file_exists ( $this->cacheDir . '/' . $this->cacheFile . '.php' ) ) {
                $this->xml = simplexml_load_file ( 'cache/' . $this->cacheFile . '.php' );
            }    else {
                $this->xml = simplexml_load_file ( $this->rssFile );
                $cacheFileCode = file_get_contents ( $this->rssFile );
            
                $fp = fopen ( $this->cacheDir . '/' . $this->cacheFile . '.php' , 'w' );
                fwrite ( $fp , $cacheFileCode );
                fclose ( $fp );
            }
        } else {
            $this->xml = simplexml_load_file ( $this->rssFile );    
        }
    }

public function clearAllCache ()
{
    foreach ( glob($this->cacheDir . "/*.php") as $fileCacheName ) {
        unlink ( $fileCacheName );
    }
}

public function clearOneCache ( )
{
    unlink ( $this->cacheDir . '/' . $this->cacheFile . '.php' );
}

public function rssInfo ()
{
    $arr['version']     = $this->xml->attributes();
    $arr['title']       = $this->xml->channel->title;
    $arr['description'] = $this->xml->channel->description;
    
    return $arr;
}

public function getRss()
{
    return $this->xml->channel->item;
}

}

?>

$rss = new Rss ( 'adres do pliku xml' , 'on/off cache', 'katalog dla cache' );

$info = $rss->rssInfo();

echo 'Wersja RSS = ' . $info['version'] . '<br />';
echo 'Tytuł kanału = ' . $info['title'] . '<br />';
echo 'Opis kanalu = ' . $info['description'] . '<br />';

foreach ( $rss->getRss() as $item )
{
echo '<h1>' . $item->title . ' (' . $item->pubDate . ')</h1><br /><small>' . $item->description . '</small><br />' . $item->link;
}

$rss->ClearOneCache();

$rss->ClearAllCache();