perl mysql filter bad characters

I am creating a message board type script that uses mysql.
I need a filter that takes out the bad characters such as ' (single quotes) etc.
that will mess up the database.
I am looking for one line that does several caracters that does something like:
$linkmessage =~ s/'/\'/g;

but the problem with this is I would have to do it for all characters and it still just inserts the '

Thanks any suggestions or helps are appreciated
cortecdsAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

dutchfoxerCommented:
$var=~ s/[^a-zA-Z0-9,\.\s]+//gs;


The above will remove everything that isn't a letter, a number, a comma, whitespace, or a period from string. Just keep adding things you want into the character class (the part between the brackets) until you get to the "safe" text you want.

The following link / tutorial explains a bit of the above expression:
http://www.gossland.com/course/matching/expressions.html

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
dutchfoxerCommented:
why a B grade if I may ask? Was the answer not what you needed? Too limited explaination? How could i improve next time?
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Scripting Languages

From novice to tech pro — start learning today.