使用php curl

Question

我是使用cURL的新手，很难为它找到好的资源。我正在尝试做的是登录到远程站点，让curl执行登录表单，然后发回成功。

//username and password of account
$username = 'myuser';
$password = 'mypassword';

//login form action url
$url="http://watchers.to/"; 
$postinfo = "op=login&login=".$username."&password=".$password;

$cookie_file_path = "cookie.txt";

$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_NOBODY, false);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);

curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file_path);
//set the cookie the site has for certain features, this is optional
curl_setopt($ch, CURLOPT_COOKIE, "cookiename=0");
curl_setopt($ch, CURLOPT_USERAGENT,
"Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.12) 
Gecko/20050915 Firefox/1.0.7");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_REFERER, $_SERVER['REQUEST_URI']);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);

curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postinfo);
curl_exec($ch);

//page with the content I want to grab
curl_setopt($ch, CURLOPT_URL, "http://watchers.to/?op=my_reports");
//do stuff with the info with DomDocument() etc
$html = curl_exec($ch);
echo $html;
curl_close($ch);

我做错了什么。在此工作之后，我想重定向到另一个页面并从我的网站获取内容。