$post_array = $this->input->post();

        $img_url_array  = array(); //썸네일이미지 정보
        $img_url2_array = array(); //상세이미지 정보
        
        
        $config['upload_path'] = './img/m_coupon/thum/'; 
        $config['allowed_types'] = 'gif|jpg|png'; 
        $config['max_size']    = '10000';
        $config['remove_spaces'] = true;
        $config['encrypt_name'] = true; 
        
        $this->load->library('upload', $config);
        //썸네일

            if ( ! $this->upload->do_upload("img_url") ){
                exit("이미지업로드 실패!_1".print_r($this->upload->display_errors()));
            }else{
                $img_url_array = $this->upload->data();
            }

        
            
        $config['upload_path'] = './img/m_coupon/square/'; //경로변경
        $this->load->library('upload', $config);
        //상세이미지

            if ( ! $this->upload->do_upload("img_url2")){
                exit("이미지업로드 실패!_2".print_r($this->upload->display_errors()));
            }else{
                $img_url2_array = $this->upload->data();
            }