ci框架
该程序可以实现:
1.同时上传5张图片
2.同时生成两种尺寸的缩略图
3.保存到mysql
controllers：upload.php文件：
复制代码 代码如下:load->library('upload', $config);
//170*170图片
      $configthumb = array();
      $configthumb['image_library'] = 'gd2';
      $configthumb['source_image'] = '';
      $configthumb['create_thumb'] = true;
      $configthumb['maintain_ratio'] = true; //保持图片比例
      $configthumb['new_image'] = 'album/thumb';
      $configthumb['width'] = 170;
      $configthumb['height'] = 170;
      //600*600图片
      $configlarge = array();
      $configlarge['image_library'] = 'gd2';
      $configlarge['source_image'] = '';
      $configlarge['create_thumb'] = true;
      $configlarge['maintain_ratio'] = true; //保持图片比例
      $configlarge['new_image'] = 'album/large';
      $configlarge['width'] = 600;
      $configlarge['height'] = 600;
$this->load->library('image_lib');
for($i = 1; $i         $upload = $this->upload->do_upload('image'.$i);      
        if($upload === false) continue;
        $data = $this->upload->data();//返回上传文件的所有相关信息的数组
        $uid = $this->session->userdata('uid');
        $uploadedfiles[$i] = $data;
if($data['is_image'] == 1) {
          //初始化170*170 
          $configthumb['source_image'] = $data['full_path']; //文件路径带文件名
          $this->image_lib->initialize($configthumb);
          $this->image_lib->resize();
          //初始化600*600
          $configlarge['source_image'] = $data['full_path']; //文件路径带文件名
          $this->image_lib->initialize($configlarge);
          $this->image_lib->resize();
        }
//插入图片信息到album表,插入的文件名为source目录文件名
        $picture = array(
            'filename' => $data['file_name'],
            'albumid' => $this->uri->segment(4,0),
            'uid' => $this->session->userdata('uid'),
            'dateline' => time(),
            'describe' => '',
            'click' => 0
        );
$this->load->model('album_model');
        $this->album_model->addpic($picture);
        $picture = array();
      }
    }
    /* 转出 */
    $albumid = $this->uri->segment(4);
    $backurl = site_url() . 'photo/editpic/album/' .$albumid;
    $this->session->set_flashdata('msg','图片上传成功.');
    redirect($backurl,'refresh');
  }
}
views:new_pic.view文件：
复制代码 代码如下:
此外需要注意：
1.要一次上传几个文件，修改表单和控制器中循环部分的参数就好。
2.album\\source 是上传后原图目录  large和thumb分别是两次执行$this->image_lib->resize();后存放缩略图的目录
3.缩略图文件名如需和album\\source目录一致，请添加参数 $config['thumb_marker'] = '';
4.$picture这部分数组是保存到数据库的东西，可以不用管了。