if (!function_exists('curl_init')) { 
            throw new Exception('server not install curl'); 
        } 
        $ch = curl_init(); 
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
        curl_setopt($ch, CURLOPT_HEADER, true); 
        curl_setopt($ch, CURLOPT_URL, $url); 
        curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); 
        if (!emptyempty($header)) { 
            curl_setopt($ch, CURLOPT_HTTPHEADER, $header); 
        } 
        $data = curl_exec($ch); 
        list($header, $data) = explode("\r\n\r\n", $data); 
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE); 
        if ($http_code == 301 || $http_code == 302) { 
            $matches = array(); 
            preg_match('/Location:(.*?)\n/', $header, $matches); 
            $url = trim(array_pop($matches)); 
            curl_setopt($ch, CURLOPT_URL, $url); 
            curl_setopt($ch, CURLOPT_HEADER, false); 
            $data = curl_exec($ch); 
        } 
        if ($data == false) { 
            curl_close($ch); 
        } 
        @curl_close($ch); 
        return $data; 
}