php curl保存登陸信息 模擬登陸

在模擬論壇登陸的時候，服務器上會生成一個cookie 這個時候須要把cookie存儲，再每次請求的時候帶上這個cookie就能夠

header('Content-Type: text/html; charset=utf-8');

$cookie_file = dirname(__FILE__).'/cookie.txt';
//$cookie_file = tempnam("tmp","cookie");

//先獲取cookies並保存
$url = "http://www.google.com.hk";
$ch = curl_init($url); //初始化
curl_setopt($ch, CURLOPT_HEADER, 0); //不返回header部分
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); //返回字符串，而非直接輸出
curl_setopt($ch, CURLOPT_COOKIEJAR,  $cookie_file); //存儲cookies
curl_exec($ch);
curl_close($ch);

//使用上面保存的cookies再次訪問
$url = "http://www.google.com.hk/search?oe=utf8&ie=utf8&source=uds&hl=zh-CN&q=qq";
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file); //使用上面獲取的cookies
$response = curl_exec($ch);
curl_close($ch);

echo $response;