Add to url string

Question

I have a page that can be used to search all invoices. When
you open the page all invoices are selected and presented. Within
this page one can select a client to only see the invoices of that
client. After this the url looks like this:
invoices.php?client=1001
Now all the invoices of that client are presented but in no
particular order. I added a link to the columnheaders to sort the
data by date or amount. This almost works but it will present the
invoices from all the clients in the selected order. I get an url
like this:
invoices.php?orderby=amount
What I want is to add the orderby to the existing url:
invoices.php?client=1001&orderby=amount
How can I achieve this?
Kind regards,
Robin MEEUWSEN

Answer 1

SurfR wrote:
> What I want is to add the orderby to the existing url:
> invoices.php?client=1001&orderby=amount
>
> How can I achieve this?
Change the code to this:
invoices.php?client=<?php echo $_GET['client'];
?>&amp;orderby=amount
David Powers
Author, "Foundation PHP for Dreamweaver 8" (friends of ED)
Author, "Foundation PHP 5 for Flash" (friends of ED)
http://foundationphp.com/