php模拟登录 获取SESSIONID，并则在读取网页的时候发送

方法1用curl：
一.先开启php curl函数库的步骤
1).去掉windows/php.ini 文件里;extension=php_curl.dll前面的; /*用 echo phpinfo();查看php.ini的路径*/
2).把php5/libeay32.dll，ssleay32.dll复制到系统目录windows/下
3).重启apache
二.例子
例子:


<?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：




<?php


function 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 071012


fputs($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>";


?>