CodeIgniter-文件上传



使用File Uploading类,我们可以上传文件,也可以限制要上传文件的类型和大小。请按照给定示例中显示的步骤操作,以了解CodeIgniter中的文件上传过程。

复制以下代码并将其存储在application / view / Upload_form.php

<title>Upload Form</title> 
   
    
    
      <?php echo $error;??> 
      <?php echo form_open_multipart('upload/do_upload');??> 
        
      <form action="" method="">
         <input type="file" name="userfile" size="20"> 
         <br><br> 
         <input type="submit" value="upload"> 
      </form> 
        
   
    

复制下面给出的代码,并将其存储在application / view / Upload_success.php中

<title>Upload Form</title> 
   
    
     
      <h3>Your file was successfully uploaded!</h3>  
        
      <ul> 
         <?phpforeach ($upload_data as $item =?> $value):?> 
         <li><?php echo $item;??>: <?php echo $value;??></li> 
         <?phpendforeach ; ??>
      </ul>  
        
      <p><?php echo anchor('upload', 'Upload Another File!'); ??></p>  
   
    

复制下面给出的代码,并将其存储在application / controllers / Upload.php中。在CodeIgniter的根目录(即应用程序文件夹的父目录)中创建“ uploads ”文件夹。

<?php class Upload extends CI_Controller {
    
      public function __construct() { 
         parent::__construct(); 
         $this-?>load->helper(array('form', 'url')); 
      }
        
      public function index() { 
         $this->load->view('upload_form', array('error' => ' ' )); 
      } 
        
      public function do_upload() { 
         $config['upload_path']   = './uploads/'; 
         $config['allowed_types'] = 'gif|jpg|png'; 
         $config['max_size']      = 100; 
         $config['max_width']     = 1024; 
         $config['max_height']    = 768;  
         $this->load->library('upload', $config);
            
         if ( ! $this->upload->do_upload('userfile')) {
            $error = array('error' => $this->upload->display_errors()); 
            $this->load->view('upload_form', $error); 
         }
            
         else { 
            $data = array('upload_data' => $this->upload->data()); 
            $this->load->view('upload_success', $data); 
         } 
      } 
   } 
?>

application / config / routes.php中的路由文件中进行以下更改,并在文件末尾添加以下行。

$route['upload'] = 'Upload';

现在,让我们通过在浏览器中访问以下URL来执行此示例。将URL替换为yoursite.com。

http://yoursite.com/index.php/upload

它将产生以下屏幕-

上载表格

成功上传文件后,您将看到以下屏幕-

成功上传

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