，php自动ping百度的然后.

求助，php自动ping百度的然后....
小弟有一个php的站，本来程序没有rss自动ping百度的功能，但是我想加一个，于是从网上找了段代码如下：

PHP code

<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?phpfunction postUrl($url, $postvar){    $ch = curl_init();    $headers = array(        “POST “.$url.” HTTP/1.0″,        “Content-type: text/xml; charset=\”utf-8\”",        “Accept: text/xml”,        “Content-length: “.strlen($postvar)    );    curl_setopt($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, $postvar);    $res = curl_exec ($ch);    curl_close ($ch);    return $res;}$baiduXML = “<?xml version=\”1.0\” encoding=\”utf-8\”?>   <methodcall>   <methodname>weblogUpdates.extendedPing</methodname>   <params>   <param><value><string>$url</string></value>   <param><value><string>$url</string></value>   </params>   </methodcall>”;$res = postUrl(‘http://ping.baidu.com/ping/RPC2′, $baiduXML);?>

然后....就没有然后了...
想问下各位大大，怎样才能最终实现这个RSS自动ping百度?求详细步骤，小弟是php菜鸟！

------解决方案--------------------

PHP code

function postUrl($url, $postvar){    $ch = curl_init();    $headers = array(        "POST ".$url." HTTP/1.0",        "Content-type: text/xml; charset=\”utf-8\"",        "Accept: text/xml",        "Content-length: ".strlen($postvar),    );    curl_setopt($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, $postvar);    $res = curl_exec ($ch);    curl_close ($ch);    return $res;}$url = ''; //不知道这个值是什么$baiduXML = "<?xml version=\"1.0\” encoding=\"utf-8\"?>   <methodcall>   <methodname>weblogUpdates.extendedPing</methodname>   <params>   <param><value><string>$url</string></value>   <param><value><string>$url</string></value>   </params>   </methodcall>";echo $res = postUrl('http://ping.baidu.com/ping/RPC2', $baiduXML);<div class="clear">
                 
              
              
        
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