I'm having problems with users posting text into a form. They are obviously using Word or some other MS product. So, depending on the operating system and browser, instead of displaying a quote or comma, a 'box' or a 'question mark' is displayed.
I want to be able to, at the very least, send a warning flag to the user letting them know that they're using an invalid character. Ideally I want to ereg_replace the character with the correct one.
It mostly happens with commas, apostrophe's, dashes, and quotes.
Any ideas would be greatly appreciated.
Regards
v.