Re: Syntax?

On Wed, 3 Jan 2001, James, Yz wrote: > Hey! This is the first time I have written to a newsgroup...... And being > a newbie, I need help ;) > > OK, I have several scripts I have successfully done. At the moment, I'm > working on setting up a database for friends. The only thing I am really > struggling on is prohibiting them from using non alpha-numeric (I don't even > know whether that's the right term(!)) in their alias when signing up. > > Basically, their name should comprise of letters, numbers (if necessary), > the underscore character and nothing else. I put this code together, which > basically varifies whether the name is comprised of numbers only: > > if (ereg ("([0-9])", $alias)) { > echo "Okie Dokie $alias, you can register a name comprised of numbers."; > } else { > echo "Invalid name: $alias"; > } > > I don't want them to be able to use spaces either. > > Please try to bear in mind that I'm not only relatively new to PHP, but a > complete novice to Perl. > > Can anyone help? > > Thanks ;) > > James. > The RE you want is "^[[:alnum:]_]+$". If it has to start with a letter, use "^[[:alpha:]][[:alnum:]_]*$" instead. -- Ignacio Vazquez-Abrams <ignacio@openservices.net>