<?php 

$ch = curl_init();  

$timeout = 3;  

$useragent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)";  

$header    = array(  

                'Accept-Language: zh-cn', 

                'Connection: Keep-Alive', 

                'Cache-Control: no-cache', 

                'Content-Type:  application/x-www-form-urlencoded',

                "X-Requested-With: XMLHttpRequest"

            );

$login_url="p";

$data = '';                                                    

curl_setopt($ch, CURLOPT_HTTPHEADER, $header);

curl_setopt($ch, CURLOPT_USERAGENT, $useragent);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);  

curl_setopt($ch, CURLOPT_URL, $login_url);

curl_setopt($ch, CURLOPT_POST, TRUE);

curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));        

curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);  

$res = curl_exec($ch);  

print_r($res);