log2rss fopen problem

<?php
    error_reporting(0);
    header("Content-Type: application/rss+xml; charset=ISO-8859-1");

    $rssfeed = '<?xml version="1.0" encoding="ISO-8859-1"?>'.PHP_EOL;
    $rssfeed .= '<rss version="2.0">'.PHP_EOL;
    $rssfeed .= '<channel>'.PHP_EOL;
    $rssfeed .= '<title>title</title>'.PHP_EOL;
    $rssfeed .= '<link>http://site</link>'.PHP_EOL;
    $rssfeed .= '<description>desc</description>'.PHP_EOL;
    $rssfeed .= '<language>en-us</language>'.PHP_EOL;


    if((($fh = fopen($filename, "r")) !== false) && (is_readable($filename))) {
        while(($buf = fgets($fh, 4096)) !== false) {
            $buf= preg_replace('/\s+/', ' ',$buf);
            list($m, $d, $t, $h, $s, $mes) = split(' ', $buf, 6);
            if(($s=="arpalert:")||($s=="dhclient:")||(strpos($mes, "/usr/lib/php5/maxlifetime ]")!==false)||(strpos($s, "CRON")!==false)) { $
                $rssfeed .= '<item>'.PHP_EOL;
                $rssfeed .= '<title>'.$h.' - '.$s.'</title>'.PHP_EOL;
                $rssfeed .= '<description>'.htmlspecialchars($mes).'</description>'.PHP_EOL;
                $rssfeed .= '<pubDate>'.$m.', '.$d.', '.$t.'</pubDate>'.PHP_EOL;
                $rssfeed .= '</item>'.PHP_EOL;
            }
        }
        fclose($fh);
    } else {
            $rssfeed .= '<item>'.PHP_EOL;
            $rssfeed .= '<title>Error</title>'.PHP_EOL;
            $rssfeed .= '<description>file could not be opened</description>'.PHP_EOL;
            $rssfeed .= '<pubDate></pubDate>'.PHP_EOL;
            $rssfeed .= '</item>'.PHP_EOL;
    }
    $rssfeed .= '</channel>'.PHP_EOL;
    $rssfeed .= '</rss>'.PHP_EOL;

    echo $rssfeed;
?>