echo curl_exec($ch); 另外你的2.php是跳转了,并没有返回内容。
改成echo file_get_contnets('location:http://bbs.csdn.net'); 试试

解决方案 »

  1.   

    header('location:http://bbs.csdn.net');
    形成的 http 头
    HTTP/1.1 302 Found
    Date: Wed, 26 Feb 2014 09:16:38 GMT
    location: http://bbs.csdn.net
    Content-Length: 0
    Content-Type: text/html;Charset=utf-8你不跟着跳转吗?
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
      

  2.   

    谢谢斑竹的帮忙   我改成了这样
    1.php
    header('Content-type:text/html;Charset=utf-8');  
    $user = 'lee';       //登陆用户名   
    $pass = '123456';    //登陆密码   
    $post_fields = "loginname={$user}&loginpass={$pass}";
    $ch = curl_init(); 
    curl_setopt($ch,CURLOPT_URL,'http://localhost/2.php');
    curl_setopt($ch,CURLOPT_POST,1);
    curl_setopt($ch,CURLOPT_POSTFIELDS,$post_fields);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION,true);
    curl_exec($ch);
    curl_close($ch);
    2.php
     header('Content-Type:text/html;Charset=utf-8');
    if ($_POST['loginname'] == 'lee' && $_POST['loginpass'] == '123456') {
         header('location:http://bbs.csdn.net');
    } else {
          
    }
    执行1.php 还是空白 并没有实现跳转
      

  3.   

    #1 不是说了吗?
    echo curl_exec($ch);
    你不输出结果怎么能行?<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html>
      <head>
        <script id="allmobilize" charset="utf-8" src="http://a.yunshipei.com/1327c36bdd7197e30fd9f4b48d1a5bcc/allmobilize.min.js"></script>
    <meta http-equiv="Cache-Control" content="no-transform" />
    <link rel="alternate" media="handheld" href="#" />    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>CSDN论坛首页 - CSDN.NET</title>
        <script src="/assets/application-2edd8c1e00c76d813e1deb8c05ba1775.js" type="text/javascript"></script>
        <script type="text/javascript">
          $(function() {
            main_page_js.index_page();
          });
        </script>
        <link href="http://csdnimg.cn/www/images/favicon.ico" rel="SHORTCUT ICON">
    <link rel="stylesheet" href="http://static.csdn.net/public/common/toolbar/css/index.css">  </head>
      <frameset cols="230,*" frameborder="no" border="0" framespacing="0">
        <frame src="/left_menu" name="leftFrame"  noresize="noresize" id="leftFrame" title="leftFrame" />
        <frame src="/home" name="mainFrame" id="mainFrame" title="mainFrame" />
      </frameset>
      <noframes>
        <body>
        </body>
      </noframes>
    </html>