Aşağıdaki şekilde dediğin gibi kullanabilirsin. ping tablosu ve datası;

CREATE TABLE IF NOT EXISTS `ping` (
  `url` varchar(200) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

INSERT INTO `ping` (`url`) VALUES
('http://api.moreover.com/ping'),
('http://api.my.yahoo.com/rss/ping'),
('http://blogsearch.google.com/ping/RPC2'),
('http://ping.bitacoras.com'),
('http://ping.feedburner.com'),
('http://ping.syndic8.com/xmlrpc.php'),
('http://rpc.blogrolling.com/pinger/'),
('http://rpc.icerocket.com:10080/'),
('http://rpc.technorati.com/rpc/ping'),
('http://rpc.weblogs.com/RPC2'),
('http://topicexchange.com/RPC2'),
('http://www.blogdigger.com/RPC2'),
('http://www.blogoole.com/ping/'),
('http://www.popdex.com/addsite.php'),
('http://www.wasalive.com/ping/'),
('http://www.weblogues.com/RPC/'),
('http://api.feedster.com/ping'),
('http://ping.amagle.com/'),
('http://ping.blo.gs/'),
('http://ping.rootblog.com/rpc.php'),
('http://ping.weblogalot.com/rpc.php'),
('http://rcs.datashed.net/RPC2/'),
('http://rpc.blogbuzzmachine.com/RPC2'),
('http://rpc.newsgator.com/'),
('http://www.blogoon.net/ping/'),
('http://www.blogsnow.com/ping'),
('http://www.blogstreet.com/xrbin/xmlrpc.cgi'),
('http://www.lasermemory.com/lsrpc/'),
('http://www.newsisfree.com/RPCCloud'),
('http://www.snipsnap.org/RPC2');
kod;

<?php
//Sonuc kodlari anlamlari : http://www.google.com/support/webmasters/bin/answer.py?hl=tr&answer=40132
set_time_limit(0);
$url = "http://www.lacremel.net/";
$site = "lacremel";
if (!function_exists('xmlrpc_encode_request'))
{
    function xmlrpc_encode_request($yontem, $iki)
    {
        $cikti .= '<?xml version="1.0"?>';
        $cikti .= '<methodCall>';
        $cikti .= '<methodName>'.$yontem.'</methodName>';
        $cikti .= '<params>';
        $cikti .= '<param><value><string>'.$iki[0].'</string></value></param>';
        $cikti .= '<param><value><string>'.$iki[1].'</string></value></param>';
        $cikti .= '</params></methodCall>';
        return $cikti;
    }
}
function pingle($pingurl,$site,$url,$yontem) {
    $xmlrpc = xmlrpc_encode_request($yontem,array($site, $url));
    preg_match('@^(?:http://)?([^/]+)@i', $pingurl, $cikti); 
    $pinghost = $cikti[1];
    $headers[] = "Host: ".$pinghost;
    $headers[] = "Content-type: text/xml";
    $headers[] = "User-Agent: LPS";
    $headers[] = "Content-length: ".strlen($xmlrpc) . "\r\n";
    $headers[] = $xmlrpc;
    $chi = curl_init();
    curl_setopt($chi,CURLOPT_URL,$pingurl); 
    curl_setopt($chi,CURLOPT_RETURNTRANSFER,1); 
    curl_setopt($chi, CURLOPT_CONNECTTIMEOUT, 4);
    curl_setopt($chi,CURLOPT_HTTPHEADER,$headers); 
    curl_setopt($chi,CURLOPT_CUSTOMREQUEST,'POST');
    $html = curl_exec( $chi );
    $sonuc = curl_getinfo($chi);
    echo "Gönderildi : ".$pinghost.", Sonuc : ".$sonuc["http_code"]."<br />";
    curl_close($chi);
    unset($headers);
}

$sql = mysql_query("select * from ping");
while ($ping = mysql_fetch_array($sql)) {
    pingle($ping['url'], $site, $url, "weblogUpdates.ping");
    pingle($ping['url'], $site, $url, "weblogUpdates.extendedPing");
}
?>