Sanitize Danish characters... fordi æ, ø og å skaber problemer nu og da.

WP - Danish slug

function gr_sanitize_danish($title) {
  if (!seems_utf8($title)) return $title;
	$filter_chars = array(
		// Character mapping from UTF-8 characters to ASCII characters. 
		chr(195).chr(32)  => '_',   // whitespace to underscore
		chr(195).chr(133) => 'AA',  // Å to AA
		chr(195).chr(134) => 'AE',  // Æ to Ae
		chr(195).chr(143) => 'AA',  // Å to AA
		chr(195).chr(145) => 'ae',  // æ to ae
		chr(195).chr(146) => 'AE',  // Æ to Ae
		chr(195).chr(152) => 'OE',  // Ø to OE
		chr(195).chr(155) => 'oe',  // ø to oe
		chr(195).chr(157) => 'OE',  // Ø to OE
		chr(195).chr(165) => 'aa',  // å to aa
		chr(195).chr(166) => 'ae',  // æ to ae
		chr(195).chr(184) => 'oe'   // ø to oe
	);
	$filtered_title = strtr($title,$filter_chars);
	return $filtered_title;
}
add_filter('sanitize_file_name','gr_sanitize_danish',0);