function _curl($url, $post = false, $header = array(), $header_out = false, $follow_loc = true) {
    global $ckfile;
    $ch = curl_init();
    if ($post) {
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
    }
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, $header_out);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, $follow_loc);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.81 Safari/537.36");
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
    if (!is_array($header)) {
        $header = (array) $header;
    }
    $headers = array(
        'Content-Type: application/x-www-form-urlencoded; charset=UTF-8',
        'Connection: Keep-Alive'
    );
    $headers = array_merge($headers, $header);
    $headers_j = array(
        'Content-Type: application/json; charset=UTF-8',
        'Connection: Keep-Alive'
    );
    $headers_j = array_merge($headers_j, $header);
    json_decode($post);
    if (json_last_error() == JSON_ERROR_NONE) {
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers_j);
    } else {
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    }
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_COOKIESESSION, $ckfile);
    curl_setopt($ch, CURLOPT_COOKIEJAR, $ckfile);
    curl_setopt($ch, CURLOPT_COOKIE, $ckfile);
    curl_setopt($ch, CURLOPT_COOKIEFILE, $ckfile);
    //curl_setopt($ch, CURLOPT_PROXY, '127.0.0.1:8888');
    $result = curl_exec($ch);
    //echo curl_error($ch);
    curl_close($ch);
    return $result;
}