Creating a Cache File

jeffgman

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

promania

you dont have permission to create or write file i think

so
$fp = @fopen( $cache_file, 'w' );

this turns false for $fp

you should control this

if( $fp ){
fwrite(....);
fclose($fp);
}

other than if you cant create the file fwrite cant write so;

jeffgman

The cache directory that I am writing to is world writable. Not sure why I can't write to it.

drwxrwxrwx 2 jeff wheel 4096 Aug 30 20:18 cache

Jeff