PHP preg_match

I need to validate a string for these criteria...

Must be 5 characters
First 4 characters must be 0-9
Fifth character must be A-Z

How do I make this work?

$name = test_input($_POST["name"]);
if (!preg_match("/^[0-9] {4} [A-Z] {1}$/",$name)) {
  $nameErr = "not allowed";
}
mfinoccAsked:
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.

GaryCommented:
Remove the spaces

if (!preg_match("/^[0-9]{4}[A-Z]{1}$/",$name)) {

Open in new window

0

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
Ray PaseurCommented:
You may find regular expressions easier to understand (decipher) if you write them like this -- with comments and explanations.
$rgx
= '#'        // REGEX DELIMITER
. '^'        // AT START OF STRING
. '['        // START CHARACTER CLASS
. '0-9'      // RANGE OF CHARACTERS 0-9
. ']'        // END OF CHARACTER CLASS 
. '{4}'      // EXACTLY FOUR OF THESE IN THE CLASS
. '[A-Z]'    // A CHARACTER CLASS OF ALPHABETIC CHARACTERS
. '{1}'      // EXACTLY ONE OF THESE IN THE CLASS
. '$'        // AT THE END OF THE STRING
. '#'        // REGEX DELIMITER
. 'i'        // OPTIONAL - CASE-INSENSITIVE
;

Open in new window

0
mfinoccAuthor Commented:
Thanks!
0
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
PHP

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.