problem with strtolower()

I’m having a problem with StrToLower function in php I’m trying to convert characters like &THORN; and acute letters from uppercase to lowercase, but it dosen’t work. this is what the manual says: “Note that 'alphabetic' is determined by the current locale. This means that in i.e. the default "C" locale, characters such as umlaut-A (Ä) will not be converted.” dose this mean that it dosen’t return acute and other letters like that or is it a matter of configuration on the server? Thanks, David <http://www.atom.is/> ------------------------ Davíð Örn Jóhannssson Vefforritari ------------------------ Atómstöðin hf. Austurstræti 12 101 Reykjavík ------------------------ sími: 520-8105 <mailto:david@atom.is> david@atom.is <http://www.atom.is/> http://www.atom.is ------------------------