上传图片问题

kcy123 · 发表于 2009-8-22 23:36:14

为什么我上传图片的时候，图片是上传上去了，可图片的后缀名却都没了，添加了图片的后缀名上传的图片可以显示

visvoy · 发表于 2009-8-22 23:46:48

很难理解楼主的文字表述

kcy123 · 发表于 2009-8-22 23:58:17

我的意思是上传上去的图片是这样的，图片的后缀名没了

visvoy · 发表于 2009-8-22 23:59:39

用CI的图片上传类可以获得文件全名，详见手册

kcy123 · 发表于 2009-8-23 00:05:10

输出的是这个

file_name: 830371
file_type: image/jpeg
file_path: C:/wamp/www/c2c/kcy/
full_path: C:/wamp/www/c2c/kcy/830371
raw_name: 830371
orig_name: k2.jpg
file_ext: .jpg
file_size: 64.69
is_image: 1
image_width: 390
image_height: 225
image_type: jpeg
image_size_str: width="390" height="225"

kcy123 · 发表于 2009-8-23 00:06:10

http://www.ajaxbbs.net/lib/php/c ... file_uploading.html 我看的这里的

书君 · 发表于 2009-8-23 00:55:45

贴代码看看

kcy123 · 发表于 2009-8-23 02:31:28

/*控制器的*/
class Rz extends MY_Controller
{

public $layout = 'rz';

function rz()
{
  parent::Controller();
  $this->load->helper(array('form', 'url'));
}

function index()
{
  $this->load->view('upload_form', array('error' => ' ' ));
}

function do_upload()
{

  $config['upload_path'] = './kcy/';
  $config['allowed_types'] = 'gif|jpg|png|JPG';
  $config['max_size'] = '100000';
  $config['max_width']  = '1024';
  $config['max_height']  = '768';

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

  if ( ! $this->upload->do_upload())
  {
$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);
  }
}

}

kcy123 · 发表于 2009-8-23 02:33:09

Upload.php
function do_upload($field = 'userfile')
{
// Is $_FILES[$field] set? If not, no reason to continue.
if ( ! isset($_FILES[$field]))
{
$this->set_error('upload_no_file_selected');
return FALSE;
}

// Is the upload path valid?
if ( ! $this->validate_upload_path())
{
// errors will already be set by validate_upload_path() so just return FALSE
return FALSE;
}

// Was the file able to be uploaded? If not, determine the reason why.
if ( ! is_uploaded_file($_FILES[$field]['tmp_name']))
{
$error = ( ! isset($_FILES[$field]['error'])) ? 4 : $_FILES[$field]['error'];

switch($error)
{
case 1: // UPLOAD_ERR_INI_SIZE
$this->set_error('upload_file_exceeds_limit');
break;
case 2: // UPLOAD_ERR_FORM_SIZE
$this->set_error('upload_file_exceeds_form_limit');
break;
case 3: // UPLOAD_ERR_PARTIAL
   $this->set_error('upload_file_partial');
break;
case 4: // UPLOAD_ERR_NO_FILE
   $this->set_error('upload_no_file_selected');
break;
case 6: // UPLOAD_ERR_NO_TMP_DIR
$this->set_error('upload_no_temp_directory');
break;
case 7: // UPLOAD_ERR_CANT_WRITE
$this->set_error('upload_unable_to_write_file');
break;
case 8: // UPLOAD_ERR_EXTENSION
$this->set_error('upload_stopped_by_extension');
break;
default : $this->set_error('upload_no_file_selected');
break;
}

return FALSE;
}

// Set the uploaded data as class variables
$this->file_temp = $_FILES[$field]['tmp_name'];
$this->file_name = $this->_prep_filename($_FILES[$field]['name']);
$this->file_size = $_FILES[$field]['size'];
$this->file_type = preg_replace("/^(.+?);.*$/", "\\1", $_FILES[$field]['type']);
$this->file_type = strtolower($this->file_type);
$this->file_ext    = $this->get_extension($_FILES[$field]['name']);
if( $this->file_name == "" )
                     $this->file_name = $_FILES[$field]['name'];
            else
                     $this->file_name .= $this->file_ext;

// Convert the file size to kilobytes
if ($this->file_size > 0)
{
$this->file_size = round($this->file_size/1024, 2);
}

// Is the file type allowed to be uploaded?
if ( ! $this->is_allowed_filetype())
{
$this->set_error('upload_invalid_filetype');
return FALSE;
}

// Is the file size within the allowed maximum?
if ( ! $this->is_allowed_filesize())
{
$this->set_error('upload_invalid_filesize');
return FALSE;
}

// Are the image dimensions within the allowed size?
// Note: This can fail if the server has an open_basdir restriction.
if ( ! $this->is_allowed_dimensions())
{
$this->set_error('upload_invalid_dimensions');
return FALSE;
}

// Sanitize the file name for security
$this->file_name = $this->clean_file_name($this->file_name);

// Remove white spaces in the name
if ($this->remove_spaces == TRUE)
{
$this->file_name = preg_replace("/\s+/", "_", $this->file_name);
}

/*
   * Validate the file name
   * This function appends an number onto the end of
   * the file if one with the same name already exists.
   * If it returns false there was a problem.
   */
$this->orig_name = $this->file_name;

if ($this->overwrite == FALSE)
{
$this->file_name = $this->set_filename($this->upload_path, $this->file_name);

if ($this->file_name === FALSE)
{
return FALSE;
}
}

/*
   * Move the file to the final destination
   * To deal with different server configurations
   * we'll attempt to use copy() first.  If that fails
   * we'll use move_uploaded_file().  One of the two should
   * reliably work in most environments
   */
if ( ! @copy($this->file_temp, $this->upload_path.$this->file_name))
{
if ( ! @move_uploaded_file($this->file_temp, $this->upload_path.$this->file_name))
{
   $this->set_error('upload_destination_error');
   return FALSE;
}
}

/*
   * Run the file through the XSS hacking filter
   * This helps prevent malicious code from being
   * embedded within a file.  Scripts can easily
   * be disguised as images or other file types.
   */
if ($this->xss_clean == TRUE)
{
$this->do_xss_clean();
}

/*
   * Set the finalized image dimensions
   * This sets the image width/height (assuming the
   * file was an image).  We use this information
   * in the "data" function.
   */
$this->set_image_properties($this->upload_path.$this->file_name);

return TRUE;
}

// --------------------------------------------------------------------

/**
   * Finalized Data Array
   *
   * Returns an associative array containing all of the information
   * related to the upload, allowing the developer easy access in one array.
   *
   * @access public
   * @return array
   */
function data()
{
return array (
'file_name' => $this->file_name,
'file_type' => $this->file_type,
'file_path' => $this->upload_path,
'full_path' => $this->upload_path.$this->file_name,
'raw_name' => str_replace($this->file_ext, '', $this->file_name),
'orig_name' => $this->orig_name,
'file_ext' => $this->file_ext,
'file_size' => $this->file_size,
'is_image' => $this->is_image(),
'image_width' => $this->image_width,
'image_height' => $this->image_height,
'image_type' => $this->image_type,
'image_size_str' => $this->image_size_str,
);
}

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