PHP validation undefined variable notice

In Ubuntu I've configured my error reporting pretty well, and I am getting notices of undefined variables when I don't submit a  valid entry to form.

To write better code what is standard for this situation?

Thanks guys you rock.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

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.

Ray PaseurCommented:
My recommendation is to test the variable with empty() before you do any other validation tests.  If empty() returns true, you can substitute a default value.  For example if your script expects to receive an integer, you can do something like the example below.

I like to have a validation class with one method for each external variable.  That way it's not likely that any external variables will slip through the cracks!

<?php // demo/temp_burnedfaceless.php

= !empty($_GET['q'])
? (int)$_GET['q']
: 0

echo "THE VALUE OF 'q=' IS $q";

Open in new window

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
burnedfacelessAuthor Commented:
Ray you are a gentleman and a scholar.
Ray PaseurCommented:
@burnedFaceless: You must have very low standards :-)

Thanks for the points and thanks for using E-E; it's a great question - one more programmers should be asking!
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

From novice to tech pro — start learning today.