Creating a Cache File

I am having some problems creating a cache file for storing a recently grabbed rss feed. Here is my code:


<HTML>
<TITLE>RSS Feed - CNet News.com</TITLE>
<BODY>
<?
$filename = "cache/news.com.cache";
$age = 3600;          // seconds
$url = 'http://news.com.com/2547-1_3-0-20.xml';if ( file_exists ( $filename ) ) {
    $mtime = filemtime( $filename );
    $fileage = time() - mtime;
    if ( fileage > $age ) {
        $xml = simplexml_load_file($filename);
        $usedfile = "true";
    } else {
        $xml = simplexml_load_file($url);
        $usedfile = "false";
    }
} else {
$xml = simplexml_load_file($url);
$usedfile = "false";
}
echo $xml->channel->title, '<br />';
echo '<br />';
foreach ($xml->channel->item as $item) {
    echo "<A HREF=\"$item->link\">$item->title</A>", '<br />';
    echo $item->description, '<br />';
    echo $item->pubDate, '<br />';
    echo '<br />';
}if ($usedfile = "false") {
    $fp = @fopen( $cache_file, 'w' );
    fwrite( $fp, $xml );
    fclose( $fp );
}
?>
</BODY>
</HTML>

I am having problems with the fwrite line. I guess I am doing something wrong. Here is the error which PHP gives me:

Warning: fwrite(): supplied argument is not a valid stream resource in /home/httpd/html/rss-news.com.php on line 36

Warning: fclose(): supplied argument is not a valid stream resource in /home/httpd/html/rss-news.com.php on line 37

Thanks for any help you can offer me.

Jeff

Creating a Cache File

jeffgman

jatar_k

jeffgman

Join The Conversation

Moderators and Top Contributors

Hot Threads This Week