摘要：在實際項目中，通知我們需要記錄一些日志，方便問題核查。但是日志多了就很容易混亂，請求，響應，執行中的日志無法對應，這時就需要為請求進行標記唯一來進行跟蹤。

在實際項目中，通知我們需要記錄一些日志，方便問題核查。但是日志多了就很容易混亂，請求，響應，執行中的日志無法對應，這時就需要為請求進行標記唯一ID來進行跟蹤。

/**
 * 記錄請求日志
 *
 * Class ApiLog
 * @package AppLibraryComponentsElog
 */
class ApiLog
{
    static $logPath;

    private static $singleton;

    
    /**
     * 單例
     * @return ApiLog
     */
    public static function singleton()
    {

        if (false == self::$singleton instanceof ApiLog) {
            self::$singleton = new static();
        }

        return self::$singleton;
    }

    protected function __construct($logPath = "")
    {
        if (empty($logPath)) {
            self::$logPath = ROOT_PATH . "logs/request/";
        } else {
            self::$logPath = ROOT_PATH . $logPath;
        }

        if (!is_dir(self::$logPath)) {
            mkdir(self::$logPath, 0777, true);
        }
    }

    public function record($action, $request = [], $type = "requestLog")
    {
        $headers = [];
        if (!function_exists("getallheaders")) {
            foreach ($_SERVER as $name => $value) {
                if (substr($name, 0, 5) == "HTTP_") {
                    $headers[str_replace(" ", "-", strtolower(str_replace("_", " ", substr($name, 5))))] = $value;
                }
            }
        } else {
            $headers = getallheaders();
        }

        //==============  加密用戶登錄密碼
        if (isset($request["password"])) {
            $request["password"] = md5(md5($request["password"]));
        }

        //==============  加密郵箱
        if (isset($request["email"])) {
            $request["email"] = encrypt_email($request["email"]);
        }
        // ...... 日志中對關鍵信息進行加密
        
        // 請求日志記錄詳細一點
        if ("requestLog" == $type) {
            $data = [
                "action" => $action,
                "platform" => PHONE_SYSTEM,
                "ip" => real_ip(),
                "request" => $request,
                "REQUEST_URI" => isset($_SERVER["REQUEST_URI"]) ? $_SERVER["REQUEST_URI"] : "",
                "headers" => $headers,
            ];
        } else {
            $data = [
                "action" => $action,
                "response" => $request
            ];
        }

        $this->write($data, $type);
    }

    protected function write($logData, $type)
    {
    
        $minutes = date("i");

        $file = date("Y-m-d-H") . "-v" . (intval($minutes / 10)) . ".log";

        $logData = ["request_id" => static::getRequestId(), "add_time" => time(), "type" => $type, "content" => $logData];

        file_put_contents(self::$logPath . $file, json_encode($logData) . PHP_EOL, FILE_APPEND);
    }

    protected static function getRequestId()
    {
        static $requestId = "";

        if (!empty($requestId)) {
            return $requestId;
        }

        if (function_exists("session_create_id")) {
            $hash = session_create_id();
        } else {
            $uid = uniqid("", true);
            $data = "";
            $data .= isset($_SERVER["REQUEST_TIME"]) ? $_SERVER["REQUEST_TIME"] : "";
            $data .= isset($_SERVER["HTTP_USER_AGENT"]) ? $_SERVER["HTTP_USER_AGENT"] : "";
            $data .= isset($_SERVER["LOCAL_ADDR"]) ? $_SERVER["LOCAL_ADDR"] : "";
            $data .= isset($_SERVER["LOCAL_PORT"]) ? $_SERVER["LOCAL_PORT"] : "";
            $data .= isset($_SERVER["REMOTE_ADDR"]) ? $_SERVER["REMOTE_ADDR"] : "";
            $data .= isset($_SERVER["REMOTE_PORT"]) ? $_SERVER["REMOTE_PORT"] : "";
            $hash = hash("ripemd128", $uid . md5($data));
        }

        $hash = strtoupper($hash);

        return $requestId = substr($hash, 0, 8) . "-" . substr($hash, 8, 4) . "-" . substr($hash, 12, 4) . "-" . substr($hash, 16, 4) . "-" . substr($hash, 20, 12);
    }
}

使用單例，保證一次請求的ID一致

ApiLog::singleton()->record($action,$request);

ApiLog::singleton()->record($action,$actionData,"createOrder");

ApiLog::singleton()->record($action,$errorMessage,"errorHandler");
       
ApiLog::singleton()->record($action,$response,"ResponseLog");