UTF-8 validation in PHP without using preg_match()

Question

I need to validate some user input that is encoded in UTF-8. Many have recommended using the following code:

preg_match(\'/\\A(
     [\\x09\\x0A\\x0D\\x20-\\         


        

Answer 1

You should be able to use iconv to check for validity. Just try and convert it to UTF-16 and see if you get an error.