关于php虚拟登陆的一段代码(SSL),总是失败?

[huolin]

$host = 'www.paycenter.com.cn';
$service_uri = '/cgi-bin/nEWpAYcENTER/Agent/AgentLogin';
$vars ='Username=agent888888&Password=888888';

# compose HTTP request header
$header = "Host: $host\r\n";
$header .= "User-Agent: PHP Script\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: ".strlen($vars)."\r\n";
$header .= "Connection: close\r\n\r\n";
$header .= $vars;

$fp = pfsockopen("ssl://".$host, 443, $errno, $errstr);

if (!$fp) {
echo "$errstr ($errno)<br/>\n";
echo $fp;
die();
} else {
fputs($fp, "POST $service_uri HTTP/1.1\r\n");
fputs($fp, $header.$vars);
fwrite($fp, $out);
while (!feof($fp)) {
$response .= fgets($fp, 128);
}

$response=split("\r\n\r\n",$response);
// $responseheader = $response[0];
$responsecontent = $response[1];

fclose($fp);
echo $responsecontent;

}

另外,创建成功后,如何对授权的页面再进行post的?好久没有解决的问题/找了些,总是失败