Hello everyone,


I wonder if you could help me. I'm trying to create a regular expression for my input boxes. This is my regex function:

PHP Code:

function validname($name){
 return preg_match("/^[+-a-z0-9\s_]*$/i", stripslashes($_POST['name']));
} 


I only want to allow alphanumerical characters and “+-_”(plus, minus and underscore). I thought I had it all figured out but then I realised my regex also allows “. , ; ` [ ] < > ? / ” for some reason.


What am I doing wrong?

Try this for a pattern:
/^[\+\-a-z0-9\s_]*$/i

Originally Posted by Insensus

Try this for a pattern:
/^[\+\-a-z0-9\s_]*$/i

Thanks, that worked like a charm! Now I even understand why. Talkupation added.