查看此代码可能有助于了解如何处理多个图像

Have a look upon this code may this help in understanding you how to handle multiple images

       #####################
        # Uploading multiple# 
        #     Images        #
        #####################


        $files = $_FILES;
        $count = count($_FILES['uploadfile']['name']);
        for($i=0; $i<$count; $i++)
                {
                $_FILES['uploadfile']['name']= $files['uploadfile']['name'][$i];
                $_FILES['uploadfile']['type']= $files['uploadfile']['type'][$i];
                $_FILES['uploadfile']['tmp_name']= $files['uploadfile']['tmp_name'][$i];
                $_FILES['uploadfile']['error']= $files['uploadfile']['error'][$i];
                $_FILES['uploadfile']['size']= $files['uploadfile']['size'][$i];
                $this->upload->initialize($this->set_upload_options());//function defination below
                $this->upload->do_upload('uploadfile');
                $upload_data = $this->upload->data();
                $name_array[] = $upload_data['file_name'];
                $fileName = $upload_data['file_name'];
                $images[] = $fileName;

                }
              $fileName = $images;

代码中发生了什么

井 $ _ FILE ---->它是通过POST方法上传到当前脚本的项目的关联数组。进一步查看 LINK

well $_FILE---->it is an associative array of items uploaded to the current script via the POST method.for further look this LINK

它是在脚本的所有范围内可用的自动变量

it's an automatic variable avaliable within all scopes of script

 function set_upload_options()
  { 
  // upload an image options
         $config = array();
         $config['upload_path'] = LARGEPATH; //give the path to upload the image in folder
         $config['remove_spaces']=TRUE;
         $config['encrypt_name'] = TRUE; // for encrypting the name
         $config['allowed_types'] = 'gif|jpg|png';
         $config['max_size'] = '78000';
         $config['overwrite'] = FALSE;
         return $config;
  }

并且在您的HTML标记中不要忘记：

and in your html markup don't don't forget:

1. 输入名称必须定义为数组，即name =file []



2. 输入元素必须有multiple =multiple或只有多个。

1. Input name must be be defined as an array i.e. name="file[]"

2. Input element must have multiple="multiple" or just multiple

3. $ this-> load-> library（'upload'）; //加载库

3.$this->load->library('upload'); //to load library

4.回调，$ this-> upload-> do_upload（）会将在给定字段名中选择的文件上传到目标文件夹。

4.The callback, $this->upload->do_upload() will upload the file selected in the given field name to the destination folder.

5.回调$ this-> upload-> data（）返回与上传文件相关的数据数组，如文件名，路径，大小等。

5.And the callback $this->upload->data() returns an array of data related to the uploaded file like the file name, path, size etc.