Question

what’s the best practice for manipulating a request and redirect it?

example –

user goes to www.mysite.com?s=1&b=2

I want to redirect to

www.mysite.com?s=1&b=2&c=3

Answer 1

Just add the variable to the ones already passed via $_GET and then perform the redirect:

$params = $_GET;
$params['c'] = 3;

header('Location: http://www.mysite.com?' . http_build_query($params));

You could shorten the expression by using $_GET + array('c' => 3) but you get the point 🙂