php使用curl模拟登陆，并获取登陆页的信息

 // 登录成功后获取数据
 function get_content($url, $cookie) {
     $ch = curl_init();
     curl_setopt($ch, CURLOPT_URL, $url);
     curl_setopt($ch, CURLOPT_HEADER, 0);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
     curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie); //读取cookie
     $rs = curl_exec($ch); //执行cURL抓取页面内容
     curl_close($ch);
     return $rs;
 }

 // 登录成功后模拟发帖
 function post_thread($url, $cookie, $post)
 {
   $curl = curl_init();//初始化curl模块
   curl_setopt($curl, CURLOPT_URL, $url);//登录提交的地址
   curl_setopt($curl, CURLOPT_HEADER, 0);//是否显示头信息
   curl_setopt($curl, CURLOPT_RETURNTRANSFER, 0);//是否自动显示返回的信息
   curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie); //读取cookie
   curl_setopt($curl, CURLOPT_POST, 1);//post方式提交
   curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($post));//要提交的信息
   curl_exec($curl);//执行cURL
   curl_close($curl);//关闭cURL资源，并且释放系统资源
 }

 //设置post的数据
$post = array (
    'user_id' => '[email protected]',
    'password' => '123456',
    'goto_page' => 'http://m.app.cn/index.php',
    'act' => 'login',
    't' => time(),
);

//登录地址
$url = "http://m.app.cn/account/login.php";

//设置cookie保存路径
$cookie = dirname(__FILE__) . '/cookie_curl.txt';

//登录后要获取信息的地址
$url2 = "http://m.app.cn/user/wap/my_index.php";

// 1.模拟登录
 login_post($url, $cookie, $post);

// 2.获取登录页的信息
// $content = get_content($url2, $cookie);

//匹配页面信息
// $preg = "/(.*)<\/td>/i";
// preg_match_all($preg, $content, $arr);
// $str = $arr[1][0];
//输出内容
// echo $content;

// 3.模拟发帖
$thread_info = array(
  'action'   => 'pub',
  'title'    => 'Test curl',
  'content'  => 'Hello, world.',
  't'        => time(),
);
$pub_thread_url = 'http://m.app.cn/thread/api/pub_thread.php';

$ret = post_thread($pub_thread_url, $cookie, $thread_info);
print_r($ret);

//删除cookie文件
@ unlink($cookie);

?>