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   1  <?php
   2  /*

   3   * Limb PHP Framework

   4   *

   5   * @link http://limb-project.com

   6   * @copyright  Copyright &copy; 2004-2007 BIT(http://bit-creative.com)

   7   * @license    LGPL http://www.gnu.org/copyleft/lesser.html

   8   */
   9  
  10  /**

  11   * class lmbMimeType.

  12   *

  13   * @package net

  14   * @version $Id: lmbMimeType.class.php 5953 2007-06-06 16:28:38Z wiliam $

  15   */
  16  class lmbMimeType
  17  {
  18    static protected $mime_types = array(
  19      'avi' => 'video/avi',
  20      'aif' => 'audio/x-aiff',
  21      'aifc' => 'audio/x-aiff',
  22      'aiff' => 'audio/x-aiff',
  23      'bmp' => 'image/bmp',
  24      'doc' => 'application/msword',
  25      'flv' => 'video/x-flv',
  26      'gif' => 'image/gif',
  27      'html' => 'text/html',
  28      'jpeg' => 'image/pjpeg',
  29      'jpg' => 'image/jpeg',
  30      'js' => 'text/javascript',
  31      'mpeg' => 'video/mpeg',
  32      'mp3' => 'audio/mpeg',
  33      'mpg' => 'video/mpeg',
  34      'msg' => 'message/rfc822',
  35      'pdf' => 'application/pdf',
  36      'png' => 'image/png',
  37      'ppt' => 'application/vnd.ms-powerpoint',
  38      'psd' => 'image/psd',
  39      'rtf' => 'text/rtf',
  40      'swf' => 'application/x-shockwave-flash',
  41      'txt' => 'text/plain',
  42      'wav' => 'audio/x-wav',
  43      'xls' => 'application/vnd.ms-excel',
  44      'zip' => 'application/x-zip-compressed',
  45      'zip' => 'application/zip',
  46    );
  47  
  48    static protected $flipped_mime_types = array();
  49  
  50    static function getExtension($mime_type)
  51    {
  52      if(!self :: $flipped_mime_types)
  53        self :: $flipped_mime_types = array_flip(self :: $mime_types);
  54  
  55      $mime_type = strtolower($mime_type);
  56  
  57      return isset(self :: $flipped_mime_types[$mime_type])
  58        ? self :: $flipped_mime_types[$mime_type]
  59        : null;
  60    }
  61  
  62    static function getMimeType($extension)
  63    {
  64      $extension = ltrim(strtolower($extension), '.');
  65  
  66      return isset(self :: $mime_types[$extension])
  67        ? self :: $mime_types[$extension]
  68        : null;
  69    }
  70  
  71    static function getFileMimeType($file)
  72    {
  73      if($info = pathinfo($file))
  74      {
  75        if(isset($info['extension']))
  76          return self :: getMimeType($info['extension']);
  77      }
  78    }
  79  }
  80  ?>