代码bug修改

@@ -495,7 +495,7 @@ class Exam extends Api
                     ->where('user_id',$user_id)
                     ->where('study_id',$study_id)
                     ->where('exam_num',$study_exam_num)
-                    ->wherTime('createtime','month')
+                    ->whereTime('createtime','month')
                     ->update(['score'=>$score['num']]);
             }
         }elseif ($type == 2){
@@ -506,7 +506,7 @@ class Exam extends Api
                 ->where('type',2)
                 ->where('question_id',$question_id)
                 ->where('study_exam_num',$study_exam_num)
-                ->wherTime('createtime','month')
+                ->whereTime('createtime','month')
                 ->find();
             if(empty($data)){
                 $this->error('参数有误');
@@ -539,13 +539,13 @@ class Exam extends Api
                     ->where('study_id',$study_id)
                     ->where('study_exam_num',$study_exam_num)
                     ->field('sum(score) as num')
-                    ->wherTime('createtime','month')
+                    ->whereTime('createtime','month')
                     ->find();
                 Db::name('third_exam')
                     ->where('user_id',$user_id)
                     ->where('study_id',$study_id)
                     ->where('exam_num',$study_exam_num)
-                    ->wherTime('createtime','month')
+                    ->whereTime('createtime','month')
                     ->update(['score'=>$score['num']]);
             }
         }elseif ($type == 3){
@@ -556,7 +556,7 @@ class Exam extends Api
                 ->where('type',3)
                 ->where('question_id',$question_id)
                 ->where('study_exam_num',$study_exam_num)
-                ->wherTime('createtime','month')
+                ->whereTime('createtime','month')
                 ->find();
             if(empty($data)){
                 $this->error('参数有误');
@@ -576,14 +576,14 @@ class Exam extends Api
                     ->where('user_id',$user_id)
                     ->where('study_id',$study_id)
                     ->where('study_exam_num',$study_exam_num)
-                    ->wherTime('createtime','month')
+                    ->whereTime('createtime','month')
                     ->field('sum(score) as num')
                     ->find();
                 Db::name('third_exam')
                     ->where('user_id',$user_id)
                     ->where('study_id',$study_id)
                     ->where('exam_num',$study_exam_num)
-                    ->wherTime('createtime','month')
+                    ->whereTime('createtime','month')
                     ->update(['score'=>$score['num']]);
             }
         }

@@ -561,7 +561,7 @@ class User extends Api
         $third_exam = Db::name('third_exam')
             ->where('user_id',$user_id)
             ->where('study_id',$id)
-            ->wherTime('createtime','month')
+            ->whereTime('createtime','month')
             ->order('exam_num desc')
             ->find();