Remove any spaces in each line, and try using the following in the config file.
Code:
define('PHPDIG_ENCODING','iso-8859-9');
$phpdig_string_subst['iso-8859-9'] = '*:À,á:Á,â:Â,ã:Ã,ä:Ä,å:Å,æ:Æ,ç:Ç,è:È,é:É,ê:Ê,ë:Ë,ì:Ì,*:Í,î:Î,ï:Ï,ð:Ð,ñ:Ñ,ò:Ò,ó:Ó,ô:Ô,õ:Õ,ö:Ö,÷:×,ø:Ø,ù:Ù,ú:Ú,û:Û,ü:Ü,ý:Ý,þ:Þ,ÿ:ß';
$phpdig_words_chars['iso-8859-9'] = '[:alnum:]ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖרÙÚÛÜÝÞß*áâãäåæçèéêëì*îïðñòóôõö÷øùúûüýþÿ';