支付回調代理轉發

某些客戶爲了安全  不對外完全開放域名   但支付回調需要外網可以訪問   可以在不完全開放的情況下  僅開放一個端口  Nginx裏配置下端口  開放端口指向的目錄下新建個轉發文件  文件名和原回調文件名相同即可 回調url用這個開放的端口的  下面這個是爲某個客戶解決這個情況時做的  客戶僅使用支付寶   支付可以實現成功回調

<?php
error_log(date("c") . "\t" . 'curl請求:' . "\t" . var_export(array($_SERVER, $_GET, $_POST), 1) . "\n", 3, 'logs/curl_'.date('Y-m-d').'.log');

$domain = 'http://'.$_SERVER['SERVER_NAME'];
$uri = $_SERVER["REQUEST_URI"];
$method = $_SERVER["REQUEST_METHOD"];
$data = file_get_contents('php://input');
// echo("<pre>");print_r(array($domain.$uri, $method, $data, $headers));exit();
error_log(date("c") . "\t" . 'curl請求:' . "\t" . print_r(array($domain.$uri, $method, $data), 1) . "\n", 3, 'logs/curl_'.date('Y-m-d').'.log');
$response = curl_request($domain.$uri, $method, $data);
echo($response);

/**
 * CURL Request
 */
function curl_request($api, $method = 'GET', $params = array(), $headers = [])
{
    $curl = curl_init();

    switch (strtoupper($method)) {
        case 'GET':
            if (!empty($params)) {
                $api .= (strpos($api, '?') ? '&' : '?') . http_build_query($params);
            }
            curl_setopt($curl, CURLOPT_HTTPGET, true);
            break;
        case 'POST':
            curl_setopt($curl, CURLOPT_POST, true);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $params);

            break;
        case 'PUT':
            curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'PUT');
            curl_setopt($curl, CURLOPT_POSTFIELDS, $params);
            break;
        case 'DELETE':
            curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'DELETE');
            curl_setopt($curl, CURLOPT_POSTFIELDS, $params);
            break;
    }

    curl_setopt($curl, CURLOPT_URL, $api);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($curl, CURLOPT_HEADER, 0);

    curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);

    $response = curl_exec($curl);

    if ($response === false) {
        $error = curl_error($curl);
        error_log(date("c")."\t".'curl請求失敗' . json_encode($error)."\n", 3, 'logs/curl_error_'.date('Y-m-d').'.log');
        curl_close($curl);
        return false;
    }

    curl_close($curl);

    return $response;
}