get_var($sql); $unixtime = strtotime($maxdate); // format timestamp for Last-Modified header $clast = gmdate("D, d M Y H:i:s \G\M\T",$unixtime); $cetag = md5($last); $slast = $_SERVER['HTTP_IF_MODIFIED_SINCE']; $setag = $_SERVER['HTTP_IF_NONE_MATCH']; // send it in a Last-Modified header header("Last-Modified: " . $clast, true); header("Etag: " . $cetag, true); // compare it to aggregator's If-Modified-Since and If-None-Match headers // if they match, send a 304 and die // This logic says that if only one header is provided, just use that one, // but if both headers exist, they *both* must match up with the locally // generated values. //if (($slast?($slast == $clast):true) && ($setag?($setag == $cetag):true)){ if (($slast && $setag)?(($slast == $clast) && ($setag == $cetag)):(($slast == $clast) || ($setag == $cetag))) { header("HTTP/1.1 304 Not Modified"); echo "\r\n\r\n"; exit; } add_filter('the_content', 'trim'); if (!isset($rss_language)) { $rss_language = 'en'; } ?> "; ?> "> hourly 1 2000-01-01T12:00+00:00 (mailto:) ]]>