Input Validation with regular expression fails - by: Bielefeld

Thanks for your input!

Executing the survey live does not make any difference,
simplifying the regex to the absolute minimum like this:

does not make a difference either.

Your point of JS vs. PHP regex-validation is not clear to
me. Is it, that on some levels (preview perhaps) JS-regex
is used, and on other (live survey) PHP-regex is used?
This is not how I tried to understand the source code,
but I may be missing something important here!

Cheers,
Stefan