a-zA-Z0-9_ == \w

[download]
I'd use an array mapped to a hash to check existance of user - easier maintenance 
my %sysuser = map { $_ => 1 } qw(administrator accounts support postma
+ster webmaster spam-admin  technical billing sales purchase buy misus
+e assistance mail virus-admin manager usenet hostmaster);

if (defined $sysuser{$username}) {

[download]
If you're loading CGI, you might as well use it for output: 
$w->p('Please Accept The Terms And Conditions.');

print $w->header.
       $message;

[download]
etc.

From a style view, (personally), I'd use @error to store errors: 

my @errors=();
...
push @errors, 'Password Must Be Between 6-30 Chars With No Symbols.';

[download]
then check with 
if (@errors) {
    print $w->header.
          join '', map { $q->p($_) } @errors;
    exit(0);
}

# you only need one cgi object
$w->redirect();

[download]
Note, most people use $q(uery) or $cgi for the CGI object you might want to do the same, especially when you want to read up CGI tutorials here. It might help :)

Note - above is untested for exact syntax, but that's the general idea. And yes, use SSL!

But overall, I think you've done a pretty good job if you're new to Perl :)

.02

cLive ;-)

In reply to Re: CGI script review by cLive ;-)
in thread CGI script review by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.