Question

我正在尝试更新我的信息：在localhost中它不是错误变量：img，但是当我将它上传到服务器时，它是错误的，例如遇到了PHP错误：

严重性：通知消息：未定义变量：img文件名：controllers / pages.php行号：79 ....

function update_ads($id)
    {
        if($this->input->post('update_ads'))
            {
                $this->db->select('img');
                $this->db->where('id',$id);
                $query = $this->db->get('tblp_label_slides',$id);
                foreach($query->result() as $row)
                {
                    $img = $row->img;
                    $image = $this->session->set_userdata('img', $img);
                }
                if($img!='')
                {
                    $config['upload_path'] ='./images/ads';
                    $config['allowed_types'] ='jpg|jpeg|gif|png';
                    $config['max_size'] = 1024*8;
                    $config['encrypt_name'] = true;
                    $this->upload->initialize($config);
                    $this->load->library('upload', $config);
                    if(!$this->upload->do_upload('imgfile'))
                    {
                        $edit['update'] = $this->mod_write->up_adv($this->session->userdata('img'), $id);
                        $this->session->set_flashdata(array('success_update' => 12));
                        redirect('pages/ads_right');
                    }
                    else
                    {
                        $img_content = $this->upload->data('imgfile');
                        $edit['update'] = $this->mod_write->up_adv($img_content['file_name'], $id);
                        unlink("./images/ads/".$img);
                        $this->session->set_flashdata(array('success_update' => 12));
                        redirect('pages/ads_right');
                    }
                }
                else
                {
                    $config['upload_path'] = './images/ads';
                    $config['allowed_types'] = 'jpg|jpeg|gif|png';
                    $config['max_size'] = 1024*8;
                    $config['encrypt_name'] = true;
                    $this->upload->initialize($config);
                    $this->load->library('upload', $config);
                    if(! $this->upload->do_upload('imgfile'))
                    {
                        $edit['update'] = $this->mod_write->up_adv('', $id);
                        $this->session->set_flashdata(array('success_update' => 12));
                        redirect('pages/ads_right');
                    }
                    else
                    {
                        $img_content = $this->upload->data('imgfile');
                        $edit['update'] = $this->mod_write->up_adv($img_content['file_name'], $id);
                        unlink("./images/ads/".$img);
                        $this->session->set_flashdata(array('success_update' => 12));
                        redirect('pages/ads_right');
                    }
                }
            }
    }

我的模特

function up_adv($img_content)
    {
        $id = $this->uri->segment(3);
        $data = array(
            'dates'=>date('Y-m-d H:i:s'),
            'url'=>replace_tag($this->input->post('url')),
            'title'=>replace_tag($this->input->post('title')),
            'img'=>$img_content,
            'type'=>$this->input->post('type')
        );
        $this->db->where('id',pde($id))
                 ->update('tblp_label_slides',$data);
    }

Answer 1

我可能错了，但我认为问题是如何验证$img。

更改if ($img != '')

至if (isset($img) && trim($img) !== '')

如果未声明$img，如果您的查询未返回任何行，则会停止发生错误。

希望这有帮助！

严重性：通知消息：未定义变量：尝试上传到服务器时的img

1 个答案: