replacing existing items in the Querystring

[vgurgov]

Hey there,

I am calling 'mypage.php' many times while sending it a few parameters and some of those parameters are optional, and the way to know if those parameters were sent or not would be by checking them one by one(at least that's how i do it now).

But I was wondering if there is a function which simpy replaces a specified parameter not caring if anything else was sent along too. For example, if I access 'mypage.php' as follows:

mypage.php?id=12&orderby=name&noframe=true

how can I replace the 'orderby' parameter value to something else while still preserving the other parameters that might have been sent?

Thanks in advance!

[LordShryku]

When doing what? Redirecting? Refreshing? [man]str_replace[/man] if that's the case.

[vgurgov]

yeah str_replace did it, actually preg_replace did even better job..

this is how i solved it, for anyone who's interested in solution

for the querystring: id=12&orderby=name&noframe=true

$qs = $_SERVER['QUERY_STRING'];
print preg_replace("/(orderby)=\w+/i", "$1=age", $qs);

the output is: id=12&orderby=age&noframe=true

thanks for the idea LordShryku