如何使用PHP在URL栏中传递多个变量？

Question

I want to pass more than one variable in the URL bar using PHP, however I want one of the variables to be added onto another existing variable in the URL bar.

For example:
Let's say you have: test.php?u=2 and let's suppose one of the fields is age. Once I click submit I want the URL to look like test.php?u=2&age=22 but on the same page.

How could I do this? Would I have to redirect the user again?

Answer 1

<form method="get" action="?"> - use this as your form tag. It'll submit to the same page, with all the form values in the querystring, accessible via $_GET.