Redirecting a user to the first page in a recordset (PHP/MySQL)

On my site I have a comments page with a small text box to
enter a page number to navigate through the comments. If a user
enters a page number greater than the highest page, I want them to
be redirected to the first page. I'm having a lot of trouble
figuring out how to do this because the 'current page' variable is
set before the mysql query, and its not until after that, the total
'page variable' is set.
The 'total page' variable must be set after the query because
it relies on other variables from the query, and the 'current page'
variable must be set before the query because the query relies on
the 'current page' variable. So it seems impossible to rearranges
these things to put in something such as:
if ($pageNum_submission_comments >
$totalPages_submission_comments) {
$pageNum_submission_comments = 0;
Is there something else I can do? I would really appreciate
some help on this, as I've been trying to figure out how to do it
for such a long time now.
Thanks in advanced to anyone who is able to help me.

AngryCloud wrote:
> If you wouldn't mind explaining the example code you
provided, that would be
> very convenient... but if you do mind, I'm sure I can
figure it out eventually.
You need to find the number of comments associated with a
particular
article, and use that number to calculate the number of pages
they will
occupy. SELECT COUNT(*) finds the number of records in a
table. So,
something like this would find the number of comments
associated with a
specific article:
$getTotal = "SELECT COUNT(*) FROM myTable WHERE articleID =
$articleID";
You then pass that SQL query to mysql_query() to process it.
mysql_fetch_row() extracts the result as an array, which I
have assigned
to $row. Since there's only one value in the result, $row[0]
contains
the number you want.
$result = mysql_query($getTotal);
$row = mysql_fetch_row($result);
$totalComments = $row[0];
$totalComments contains the number of comments. You can now
use that
figure to calculate the maximum number of pages.
David Powers, Adobe Community Expert
Author, "Foundation PHP for Dreamweaver 8" (friends of ED)
Author, "PHP Solutions" (friends of ED)
http://foundationphp.com/

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