diff --git a/src/Files.php b/src/Files.php
index ca95fef..88404fc 100644
--- a/src/Files.php
+++ b/src/Files.php
@@ -33,7 +33,7 @@ class Files
      * @return bool
      * @throws DtAppException
      */
-    public function delete(string $name)
+    public function delete($name)
     {
         if (empty($name)) throw new DtAppException('请检查需要删除文件夹的名称');
         if (file_exists($name)) if (unlink($name)) return true;
@@ -46,7 +46,7 @@ class Files
      * @return bool
      * @throws DtAppException
      */
-    public function deletes(string $name)
+    public function deletes($name)
     {
         if (empty($name)) throw new DtAppException('请检查需要删除文件夹的名称');
         //先删除目录下的文件：
@@ -78,7 +78,7 @@ class Files
      * @return bool
      * @throws DtAppException
      */
-    public function folderZip(string $name, string $suffix_name = '.png', string $file_name = '*')
+    public function folderZip($name, $suffix_name = '.png', $file_name = '*')
     {
         if (empty($name)) throw new DtAppException('请检查需要打包的路径名称');
         try {
diff --git a/src/Random.php b/src/Random.php
index 4a70254..67cd96c 100644
--- a/src/Random.php
+++ b/src/Random.php
@@ -30,7 +30,7 @@ class Random
      * @param int $type 类型，1 纯数字，2 纯小写字母，3 纯大写字母，4 数字和小写字母，5 数字和大写字母，6 大小写字母，7 数字和大小写字母
      * @return false|string
      */
-    public function generate(int $length = 6, int $type = 1)
+    public function generate($length = 6, $type = 1)
     {
         // 取字符集数组
         $number = range(0, 9);
diff --git a/src/Time.php b/src/Time.php
index a09ec4f..9049336 100644
--- a/src/Time.php
+++ b/src/Time.php
@@ -29,7 +29,7 @@ class Time
      * @param string $format 格式
      * @return false|string
      */
-    public function getData(string $format = "Y-m-d H:i:s")
+    public function getData($format = "Y-m-d H:i:s")
     {
         date_default_timezone_set('Asia/Shanghai');
         return date($format, time());
@@ -63,7 +63,7 @@ class Time
      * @param string $start_time 开始时间
      * @return false|int
      */
-    public function getTimeDifference(string $end_time, string $start_time)
+    public function getTimeDifference($end_time, $start_time)
     {
         date_default_timezone_set('Asia/Shanghai');
         $end_time = strtotime($end_time);
@@ -76,7 +76,7 @@ class Time
      * @param string $date
      * @return false|int
      */
-    public function dateToTimestamp(string $date)
+    public function dateToTimestamp($date)
     {
         date_default_timezone_set('Asia/Shanghai');
         return strtotime($date);
@@ -88,7 +88,7 @@ class Time
      * @param int $mun 多少分钟
      * @return false|string
      */
-    public function dateRear(string $format = "Y-m-d H:i:s", int $mun = 10)
+    public function dateRear($format = "Y-m-d H:i:s", $mun = 10)
     {
         date_default_timezone_set('Asia/Shanghai');
         return date($format, strtotime(self::getData()) + $mun);
@@ -100,7 +100,7 @@ class Time
      * @param int $mun 多少分钟
      * @return false|string
      */
-    public function dateBefore(string $format = "Y-m-d H:i:s", int $mun = 10)
+    public function dateBefore($format = "Y-m-d H:i:s", $mun = 10)
     {
         date_default_timezone_set('Asia/Shanghai');
         return date($format, strtotime(self::getData()) - $mun);
@@ -113,7 +113,7 @@ class Time
      * @param string $end 结束时间
      * @return bool true：在范围内，false:没在范围内
      */
-    public function checkIsBetweenTime(string $start, string $end)
+    public function checkIsBetweenTime($start, $end)
     {
         date_default_timezone_set('Asia/Shanghai');
         $date = date('H:i');