Hey Stig, The person behind that report suggested that towupper and towlower could be used, although we would need to convert our PHP string to wide chars first. This is problematic since we don't know (without being told) which encoding the string is using in the first place. And even if we do know it, there are no guarantees about libraries available for making the conversion, or even if the system has those wide char functions.
I think it makes sense to add a new function to the mbstring extension: proto mb_change_case(string str, string mapping [,string encoding]) Where mapping is one of "upper", "lower" or "title" (since unicode knows about title case). This function would then be able to internally convert to unicode, apply the appropriate transformation and then convert back to the original encoding. We could then add mb_toupper and mb_tolower that internally call the change_case function with the appropriate arguments, and these functions would be good candidates for the function overloading feature of mbstring (if you need it; I still feel happier with explicit wide char calls). Until we make the whole of PHP multi-byte aware, I think mbstring is the best place for this functionality. I'm tempted to volunteer for this, if you don't mind supplying that unicode manipulation code (I'm fairly familiar with the mbstring internals). --Wez. On 09/13/02, "Stig Venaas" <[EMAIL PROTECTED]> wrote: > I really don't think toupper() would work well with UTF-8. I can't > imagine how it can be done correctly when only passing 6 bits at > the time of the character. You would need the entire Unicode code > point in one call. If there is interest, I have code that can do > Unicode normalization, change cases etc, that could be included in > PHP. Only problem is that there would be yet another library to > link with. > > Stig -- PHP Development Mailing List <http://www.php.net/> To unsubscribe, visit: http://www.php.net/unsub.php
