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
";
    [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

---

---

";
     $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 ' ] . "
" ;
?>