[Israel.pm] Telling encoding of a string

[Shahar Evron]

Is there any efficient way of checking weather a hebrew string is in 
UTF-8 or some other encoding?

I need to convert a series of Hebrew strings to unicode, but some of the 
strings are UTF-8 and some are ISO-8859-8 or cp1255 - ofcourse I don't 
want to convert the strings already in UTF-8.

Thanks,
Shahar Evron.