How do I write/put together a secure login in PHP? The website developer guide said I shouldn\'t roll my own, so referring to samples available via Google is useless.
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My answer is "Don't do it"
This is a very complex area, full of potential security gotcha's. If you are not an expert in this field, then you are really just asking for trouble and problems down the road.
I would recommend looking at getting an existing solution to do. Sadly I don't know any that I would be happy to recommend, other than openid. I'm sure you will get some good suggestions here though...