Please-Please Use the code tags to enter in the metarefresh. My suggestion is don't use a meta-refresh. Use something like this 
use CGI;
$q = new CGI;

if ($q->param('foo')) {
    #do stuff if has stuff in field
}else {
   print $q->redirect('http://www.foo.bar');
}

[download]
the redirect goes back to your original html page. Make sure you don't print anything to the browser before the if to make the redirect work.

Or 
if ($q->param('foo')) {
    #do stuff if has stuff in field
}else {
   my $bar = $q->param('bar'); #should test this too.
   print $q->header;
   print "foo was empty please try again";
   print "your html stuff here again";
   #this next line keeps the info already provided.
   print "<input type=text name=bar value=$bar>";

}

[download]


--BigJoe

In reply to RE: Displaying an Error by BigJoe
in thread Displaying an Error 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.