allowing only a-z, 0-9 2

[blitzer]

how do i parse so a form variable only submits if it consists solely of numbers and letters (a-z, A-Z, 0-9)? I'm sure there's already a thread which answers this but the search on this forum isn't working..

thanks,
-blitz

 

[Coderifous]

Well, if you are talking about validating form input BEFORE the form is submitted, then you are talking about JavaScript. Other forum.

If you are talking about validating AFTER the form is submitted, and the data makes it to the server, then here you go:

use CGI;

my $cgi = new CGI;

print $cgi->header();

$someParam = $cgi->param('someParam');

if($someParam =~ /[^a-zA-Z0-9]/){
        print "Invalid input";
        }
else{
        print "Input was OK!";
        }

Hope that helps...

--jim