使用curl存储登录的响应

我使用curl使用url、用户名和密码登录了一个网站。主要的问题是，我想取回响应并将其存储在php脚本中，该脚本表明该网站是否已登录？

主要问题是在php脚本中存储响应，即登录或登录失败？我已经给出了下面的脚本，你能告诉我要添加什么吗？

提前感谢

<?php
$cookiefile = tempnam("/tmp", "cookies");
$login_url='**********';

$login_post_url='*********';

$username = "*****";
$password = "*****";
$agent="Mozilla/5.0 (Windows NT 5.1; rv:10.0.2) Gecko/20100101 Firefox/10.0.2 ";

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$login_url);
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookiefile);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookiefile);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,  2);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$result = curl_exec ($ch);

curl_close ($ch);

$postfields = array(
        'j_username' => $username,
        'j_password' => $password,
    );
$reffer = $login_url;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$login_post_url);
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS,
       http_build_query($postfields));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_REFERER, $reffer);

curl_setopt($ch, CURLOPT_COOKIEFILE, $cookiefile);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookiefile);

curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,  2);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$result = curl_exec ($ch);
 echo $result;
curl_close ($ch);

unlink($cookiefile);
?>