the problem in my code is that i should have addedsession_start();
in other pages that requires the session info too,like in the main page
it seems like the page wont load the session info without that function.
as andrea meant when asked if i havesession_start();
in other pages. i am just answering because i know the solution now and nobody have written it in my post already, so other people can see easily how to solve this, thank you for who helped me with this.
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