Codeigniter實現(xiàn)多文件上傳的兩個方法

這兩個Codeigniter實現(xiàn)多文件上傳方法都是老外寫的，一個是用最笨的方式寫的，一個是用循環(huán)的array方式寫的，兩個結(jié)合起來使用，能夠?qū)崿F(xiàn)多文件上傳的目的。

方法一：

view: upload_form.php

<?php echo form_open_multipart('upload');  ?>
<p>
    <?php echo form_label('File 1', 'userfile') ?>
    <?php echo form_upload('userfile') ?>
</p>
<p>
    <?php echo form_label('File 2', 'userfile1') ?>
    <?php echo form_upload('userfile1') ?>
</p>
<p><?php echo form_submit('submit', 'Upload them files!') ?></p>
<?php form_close() ?>

controller: upload.php

function index()
{
    // Has the form been posted?
    if (isset($_POST['submit']))
    {
        // Load the library - no config specified here
        $this->load->library('upload');
 
        // Check if there was a file uploaded - there are other ways to
        // check this such as checking the 'error' for the file - if error
        // is 0, you are good to code
        if (!empty($_FILES['userfile']['name']))
        {
            // Specify configuration for File 1
            $config['upload_path'] = 'uploads/';
            $config['allowed_types'] = 'gif|jpg|png';
            $config['max_size'] = '100';
            $config['max_width']  = '1024';
            $config['max_height']  = '768';      
 
            // Initialize config for File 1
            $this->upload->initialize($config);
 
            // Upload file 1
            if ($this->upload->do_upload('userfile'))
            {
                $data = $this->upload->data();
            }
            else
            {
                echo $this->upload->display_errors();
            }
 
        }
 
        // Do we have a second file?
        if (!empty($_FILES['userfile1']['name']))
        {
            // Config for File 2 - can be completely different to file 1's config
            // or if you want to stick with config for file 1, do nothing!
            $config['upload_path'] = 'uploads/dir2/';
            $config['allowed_types'] = 'gif|jpg|png';
            $config['max_size'] = '100';
            $config['max_width']  = '1024';
            $config['max_height']  = '768';
 
            // Initialize the new config
            $this->upload->initialize($config);
 
            // Upload the second file
            if ($this->upload->do_upload('userfile1'))
            {
                $data = $this->upload->data();
            }
            else
            {
                echo $this->upload->display_errors();
            }
 
        }
    }
    else
    {
        $this->load->view("upload_form");
    }
}

原文地址：http://darrenonthe.net/2011/05/08/upload-multiple-files-with-codeigniter/

方法二：

view

<form...
<input type="file" name="files[]">
<input type="file" name="files[]">
...
</form>

controller

load->helper('upload');
multifile_array();
foreach ($_FILES as $file => $file_data)
  $this->upload->do_upload($file);

multifile_array文件代碼：

<?php

/**
 * Make multifile array input complaint with CI_Upload.<br>
 * For use files[ ] input name you must use it method.
 *
 * @author porquero
 *
 * @example
 * In Controller<br>
 * $this->load->helper('upload');<br>
 * multifile_array();<br>
 * foreach ($_FILES as $file => $file_data) {<br>
 *    $this->upload->do_upload($file);
 * ...
 *
 * @link http://porquero.blogspot.com/2012/05/codeigniter-multifilearray-upload.html
 */
function multifile_array()
{
    if(count($_FILES) == 0)
        return;
   
    $files = array();
    $all_files = $_FILES['f_file']['name'];
    $i = 0;
   
    foreach ($all_files as $filename) {
        $files[++$i]['name'] = $filename;
        $files[$i]['type'] = current($_FILES['f_file']['type']);
        next($_FILES['f_file']['type']);
        $files[$i]['tmp_name'] = current($_FILES['f_file']['tmp_name']);
        next($_FILES['f_file']['tmp_name']);
        $files[$i]['error'] = current($_FILES['f_file']['error']);
        next($_FILES['f_file']['error']);
        $files[$i]['size'] = current($_FILES['f_file']['size']);
        next($_FILES['f_file']['size']);
    }

    $_FILES = $files;

}