libraries/mime.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * MIME detection code.
   5  *
   6  * @version $Id$
   7  * @package phpMyAdmin
   8  * @todo Maybe we could try to use fileinfo module if loaded
   9  */
  10
  11 /**
  12  * Tries to detect MIME type of content.
  13  */
  14 function PMA_detectMIME(&$test) {
  15     $len = strlen($test);
  16     if ($len >= 2 && $test[0] == chr(0xff) && $test[1] == chr(0xd8)) {
  17         return 'image/jpeg';
  18     }
  19     if ($len >= 3 && substr($test, 0, 3) == 'GIF') {
  20         return 'image/gif';
  21     }
  22     if ($len >= 4 && substr($test, 0, 4) == "\x89PNG") {
  23         return 'image/png';
  24     }
  25     return 'application/octet-stream';
  26 }
  27 ?>