PHP session seemingly not working

Question

Session variables are apparently not working for me. I don\'t know what I\'m doing wrong. This is the code that I\'m using to check for a valid password:

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Answer 1

I just got back from fixing that...added session_start() right at the top of the file - even before the tag. Doing session_start() in the middle gives errors...don't know why. I'm new to this. Thanks for your prompt response though.