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Question about session_cache_limiter()

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Hello. I got a quick question. My site's split up into 2 files. The form page and the form processing page. Anyway, I was implementing sessions to help for security purposes, but the problem was that it was creating was that if a user made a mistake and had to go back to the form, using sessions would cause all the form fields to clear. I came across this suggestion to preserve the entered values for the form fields and have a question regarding the session_cache_limiter() command:
[code]header("Expires: Sat, 01 Jan 2000 00:00:00 GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
header("Cache-Control: post-check=0, pre-check=0",false);

Anyway, I just wanted to know what the repercussions are for doing this? Is this going to cause other issues? Thanks.

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