php用curl获取sessionid

http://www.111cn.net/phper/21/cfc64649f56d7b599cbb3cf15ade8cee.htm

<?php$cookie_jar = tempnam(''./tmp'',''cookie'');$ch = curl_init(); curl_setopt($ch,CURLOPT_URL,''http://******'');curl_setopt($ch, CURLOPT_POST, 1);$request = ''email_address=&password=&action='';curl_setopt($ch, CURLOPT_POSTFIELDS, $request);//把返回来的cookie信息保存在$cookie_jar文件中curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);//设定返回的数据是否自动显示curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//设定是否显示头信息curl_setopt($ch, CURLOPT_HEADER, false);//设定是否输出页面内容curl_setopt($ch, CURLOPT_NOBODY, false);curl_exec($ch);curl_close($ch); //get data after login$ch2 = curl_init();curl_setopt($ch2, CURLOPT_URL, ''http://*****'');curl_setopt($ch2, CURLOPT_HEADER, false);curl_setopt($ch2, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch2, CURLOPT_COOKIEFILE, $cookie_jar);$orders = curl_exec($ch2);echo '''';echo strip_tags($orders);echo '''';curl_close($ch2);?>方法2用fsockopen：<?phpfunction GetWebContent($host, $method, $str, $sessid = ''''){    $ip = gethostbyname($host);//echo "ip=$ip<br>";    [email=$fp=@fsockopen($ip,80]$fp=@fsockopen($ip,80[/email]);    if (!$fp) return;    fputs($fp, "$method ");    fputs($fp, "Host: $host ");    if (!empty($sessid))    {        fputs($fp, "Cookie: PHPSESSID=$sessid; path=/; ");    }    if ( substr(trim($method),0, 4) == "POST")    {        fputs($fp, "Content-Length: ". strlen($str) . " "); //  别忘了指定长度    }    //fputs($fp, "Content-Type: application/x-www-form-urlencoded ");fputs($fp, "Content-Type: application/x-www-form-urlencoded ");fputs($fp, "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; InfoPath.1) )");//add by Ew 071012fputs($fp, "Connection: Keep-Alive ");    if ( substr(trim($method),0, 4) == "POST")    {        fputs($fp, $str." ");    }    while(!feof($fp))    {        $response .= fgets($fp);    }    $hlen = strpos($response," "); // LINUX下是 " "    $header = substr($response, 0, $hlen);//echo "header=$header<hr><hr>";    $entity = substr($response, $hlen + 4);    if ( preg_match(''/PHPSESSID=([0-9a-z]+);/i'', $header, $matches))    {        $a[''sessid''] = $matches[1];    }    if ( preg_match(''/Location: ([0-9a-z_?=&#.]+)/i'', $header, $matches))    {        $a[''location''] = $matches[1];    }    $a[''content''] = $entity;        fclose($fp);    return $a;}  $response = GetWebContent("$host","POST /$login_page HTTP/1.0", $str);//登入得到新的session_id  //...可以在这里先保存session_id  $response = GetWebContent("$host","GET /$somepage HTTP/1.0", '''', $response[''sessid'']);//使用session_id访问页面  echo $response[''location''].$response[''content'']."<br>";?>