function url encode/decode

Hejsa.

Hvordan får jeg nedenstående function til at outputte et decoded link, jeg føder det med en encoded link, ellers fejler den ved læsning af images.ini
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<?php



  $IMG_CONFIG_FILE = 'images.ini';



  # You shouldn't need to change anything below this point

  function showImage( $ini=null ) {
    global $IMG_CONFIG_FILE;
    # if no custom ini file has been specified, use the default
    $ini_file = $ini ? $ini : $IMG_CONFIG_FILE;
    # read the config file into an array or die trying
    $images = @parse_ini_file($ini_file,true);
    if (! $images) {
      die('Unable to read ini file.');
    }
    # pick a random image from the parsed config file
    $img = array_rand($images);
    # get the selected image's css id if one exists
    $id = $images[$img]['id'] ?
      sprintf( ' id="%s" ', $images[$img]['id'] ) :
      '';
    # get the selected image's css class if one exists
    $class = $images[$img]['class'] ?
      sprintf( ' class="%s" ', $images[$img]['class'] ) :
      '';
    # get selected image's dimensions
    $size = @getimagesize( $images[$img]['src'] );
    # if an url was specified, output the opening A HREF tag
    if ( $images[$img]['url'] ) {
      printf(
        '<a href="%s" title="%s">',
        $images[$img]['url'],
        $images[$img]['title']
      );
    }
    # output the IMG tag
    printf(
      '<img src="%s" alt="%s" %s %s%s/>',
      $images[$img]['src'],
      $images[$img]['alt'],
      $size[3],
      $id,
      $class
    );
    # if an url was specified, output the closing A HREF tag
    if ( $images[$img]['url'] ) {
      echo('</a>');
    }
  }


?>