利用百度ping工具，通过程序自动提交文章

function doPingXmlForBaidu($articleurl){
	$xml = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
	$xml .= "<methodCall>\n";
	$xml .= "<methodName>weblogUpdates.extendedPing</methodName>\n";
	$xml .= "<params>\n";
	$xml .= "<param>\n";
	$xml .= "<value><string>网站名称</string></value>\n";
	$xml .= "</param>\n";
	$xml .= "<param>\n";
	$xml .= "<value><string>网站url</string></value>\n";
	$xml .= "</param>\n";
	$xml .= "<param>\n";
	$xml .= "<value><string>".文章articleurl."</string></value>\n";
	$xml .= "</param>\n";
	$xml .= "<param>\n";
	$xml .= "<value><string>rss地址</string></value>\n";
	$xml .= "</param>\n";
	$xml .= "</params>\n";
	$xml .= "</methodCall>";

  $url = "http://ping.baidu.com/ping/RPC2";  //百度地址
  $ch = curl_init();
  $headers = array(
            "POST ".$url." HTTP/1.0",
            "Content-type: text/xml;charset=\"utf-8\"",
            "Accept: text/xml",
            "Content-length: ".strlen($xml)
        );
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
    $res = curl_exec ($ch);
    curl_close ($ch);
    if (strpos($res, "<int>0</int>")){
        return ture;
    } else{
        return false;
    }
}

百度 ping说明地址http://zhanzhang.baidu.com/tools/ping