How to protect query string?

[alanzhao]

Hello:
Can any one tell me what is the way to protect query string passed from page to page.
example url:
index.php?topic=1&page=5

Is there a way to protect it from chaning its values.

Alan

[intenz]

Yeah... set cookies.

[alanzhao]

Hello:
But the values may be changed from page to page.

Alan

[[deleted]]

There is no way to protect that.

Any data you send to a browser can be changed. The trick is to make it so that it doesn't matter wether they change it.

a rule of thumb is: never send anything that you don't have to send.
You can use sessions to store data on the server-side instead of sending it through the URL all the time.