你好，我写了一个代码，上传图像路径到数据库，但事情是它上传的真实的路径（C:/wamp/www/amref/images/student_profile/childbrah2.jpg）因此，当我从数据库中获取路径，以显示图像，它给我的错误，链接是断开的。我只想存储（images/student_profile/childbrah2.jpg）。

控制器代码：

$config['upload_path'] = '../images/student_profile/';
        $config['allowed_types'] = 'gif|jpg|png|jpeg';
        $config['max_size'] = "2048000"; // Can be set to particular file size , here it is 2 MB(2048 Kb)
        $config['max_height'] = "768";
        $config['max_width'] ="1024";

        $this->load->library('upload', $config);

        if(!$this->upload->do_upload()){

             echo '<h4 style="color: red;">

                    Failure! </h4>

                    <p style="color: red;">'.$this->upload->display_errors().'</p>';


        } else {
            $data_upload_files = $this->upload->data();

            $image = base_url($data_upload_files['full_path']);