How to Check Laravel Array Data?

i am trying to check array of data, so user cannot add same data at once. what my code look like:

        for ($count = 0; $count < count($class_id); $count++) {
            $data = array(
                'class_id' => $class_id[$count],
                'section_id' => $section_id[$count],
                'teacher_id' => $teacher_id[$count],
                'days' => $days[$count],
                'Start_Time' => $start_time[$count],
            );
            $insert_data[] = $data;

        }



        for($count=1; $count<count($insert_data);$count++){
            if($insert_data[$count]['class_id']&&$insert_data[$count]['section_id']&&$insert_data[$count]['teacher_id']
            &&$insert_data[$count]['days']&&$insert_data[$count]['Start_Time']){
                return response()->json([
                    'error' => 'Same data cannot be insert'
                ]);
            }
        }


         Timetable::insert($insert_data);
            return response()->json([
                'success' => 'Data Added successfully.',
                'redirect' => url('/manage/timetable'),
            ]);

        }

    return redirect('/manage/timetable')->with('message','Data Added Successfully!');

}

data inserted correctly, everything working fine, what i want to do is to check if user insert same data 2 time or not? i uses for loop for that. what i am doing wrong? it give me "Cannot add same data" even if i change i field still gives me this error. new to laravel.

via Chebli Mohamed