diff --git a/app/api/controller/StudentController.php b/app/api/controller/StudentController.php
index d101006..861c293 100644
--- a/app/api/controller/StudentController.php
+++ b/app/api/controller/StudentController.php
@@ -204,7 +204,7 @@ class StudentController extends BaseController
         {
             mkdir($base['file_path'], 0777, true);//可创建多级目录
         }
-        imagepng($img, $save_path);//输出图片，输出png使用imagepng方法，输出gif使用imagegif方法
+        imagepng($img, $save_path, 0);//输出图片，输出png使用imagepng方法，输出gif使用imagegif方法
 
         $url = getenv('SERVER_DOMAIN') . $file_path . $params['file_name'];
         return $this->json([
diff --git a/app/api/controller/TeacherScheduleTimeController.php b/app/api/controller/TeacherScheduleTimeController.php
index 17cadef..4528a24 100644
--- a/app/api/controller/TeacherScheduleTimeController.php
+++ b/app/api/controller/TeacherScheduleTimeController.php
@@ -176,7 +176,7 @@ class TeacherScheduleTimeController extends BaseController
             {
                 mkdir($base['file_path'], 0777, true);//可创建多级目录
             }
-            imagepng($img, $save_path);//输出图片，输出png使用imagepng方法，输出gif使用imagegif方法
+            imagepng($img, $save_path, 0);//输出图片，输出png使用imagepng方法，输出gif使用imagegif方法
 
             $url = getenv('SERVER_DOMAIN') . $file_path . $params['file_name'];
 
diff --git a/plugin/admin/app/controller/TeacherScheduleTimeController.php b/plugin/admin/app/controller/TeacherScheduleTimeController.php
index 6bbb061..a2d06a4 100644
--- a/plugin/admin/app/controller/TeacherScheduleTimeController.php
+++ b/plugin/admin/app/controller/TeacherScheduleTimeController.php
@@ -458,7 +458,7 @@ class TeacherScheduleTimeController extends Crud
                         'msg' => '请先选择课程再发布'
                     ]);
                 }
-                
+
                 $student_schedule = StudentSchedule::where(['teacher_schedule_time_id' => $teacher_schedule_time->id])->select();
                 if($student_schedule->isEmpty()){
                     return json([