上传图片在codeigniter，是userfile需要？ [英] uploading images in codeigniter, is userfile required?

问题描述

我使用下面的功能将我的映像文件上传到我的服务器（Localhost）。这是很好，正在上传图像。但我需要两个图像字段，因此，一旦点击提交按钮，这两个图像都应该上传。我使用此处 Codeigniter多文件上传 描述的功能，但它

 一个PHP错误遇到
 
严重性：警告
 
消息：is_uploaded_file（）期望参数1为字符串，数组给定
 
文件名：libraries /上传。 php 
 
行号：161 
  

我不明白错误。
我用来上传单个图片的函数是

  function do_upload（）
 {
 $ config ['upload_path'] ='./uploads/'; 
 $ config ['allowed_types'] ='jpeg | png | gif'; 
 $ config ['max_size'] ='0'; 
 $ config ['max_width'] ='0'; 
 $ config ['max_height'] ='0'; 
 
 $ this-> load-> library（'upload'，$ config）; 
 
 if（！$ this-> upload-> do_upload（））
 {
 $ error = array（'error'=> $ this-> upload - > display_errors（））; 
 //失败显示错误
} 
 else 
 {
 //成功
 
} 
} 
  

此外，我还想问我可以更改我选择的输入字段名称。即我总是需要实现< input type =filename =userfile/> 。是否可以更改名称？

解决方案

/ div>

您必须循环显示已提供的链接中上传的文件。

  function do_upload ）{
 $ config ['upload_path'] ='./uploads/'; 
 $ config ['allowed_types'] ='jpeg | png | gif'; 
 $ config ['max_size'] ='0'; 
 $ config ['max_width'] ='0'; 
 $ config ['max_height'] ='0'; 
 
 $ this-> load-> library（'upload'，$ config）; 
 
 foreach（$ _FILES as $ key => $ value）{
 
 if（！empty（$ value ['tmp_name']））{
 
 if（！$ this-> upload-> do_upload（$ key））{
 $ error = array（'error'=> $ this-> upload-> display_errors ; 
 //失败显示错误
} else {
 // success 
} 
 
} 
} 
} 
  

并尝试使用HTML：

 < input type =filename =file1id =file_1/> 
< input type =filename =file2id =file_2/> 
< input type =filename =file3id =file_3/> 
  

您可以随意更改输入字段的名称。

I am using the function below to upload my image files to my server(Localhost). It is fine and image is being uploaded. But I need two image fields and hence both the images should be uploaded once the submit button is clicked. I used the function described here Codeigniter multiple file upload , but it is not working.

I get this error message

A PHP Error was encountered

Severity: Warning

Message: is_uploaded_file() expects parameter 1 to be string, array given

Filename: libraries/Upload.php

Line Number: 161

Well I cannot understand where the error is. The function that I am using to upload single image is

function do_upload()
    {
        $config['upload_path'] = './uploads/';
        $config['allowed_types'] = 'jpeg|png|gif';
        $config['max_size'] = '0';
        $config['max_width']  = '0';
        $config['max_height']  = '0';

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

        if ( ! $this->upload->do_upload())
        {
            $error = array('error' => $this->upload->display_errors());
           //failed display the errors
        }
        else
        {
            //success

        }
    }

In addition I also like to ask can i change the input field name of my choice. i.e i always need to implement <input type="file" name="userfile"/> . Is it possible to change the name? I tried changing it and I get the message No file was selected, so that must mean that I cannot change it.

解决方案

You have to loop through the uploaded files like it is shown in your provided link.

function do_upload() {
        $config['upload_path'] = './uploads/';
        $config['allowed_types'] = 'jpeg|png|gif';
        $config['max_size'] = '0';
        $config['max_width']  = '0';
        $config['max_height']  = '0';

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

        foreach ($_FILES as $key => $value) {

            if (!empty($value['tmp_name'])) {

                if ( ! $this->upload->do_upload($key)) {
                    $error = array('error' => $this->upload->display_errors());
                    //failed display the errors
                } else {
                    //success
                }

            }
        }
}

And try using HTML like this:

<input type="file" name="file1" id="file_1" />
<input type="file" name="file2" id="file_2" />
<input type="file" name="file3" id="file_3" />

You can change the names of the input fields as you like.

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