Detect encoding and make everything UTF-8

Question

I\'m reading out lots of texts from various RSS feeds and inserting them into my database.

Of course, there are several different character encodings used in the fee

Answer 1

A really nice way to implement an isUTF8-function can be found on php.net:

function isUTF8($string) {
    return (utf8_encode(utf8_decode($string)) == $string);
}