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I’m looking towards writing some applications with C and CGI, and now that I’ve implemented basic functions like URI encode/decode, HTML entities encode/decode, query/cookie parser, etc. I need to manage sessions. How should I do this? For example, how does PHP manage sessions?
Store the UserID and SessionID in a cookie, then store all other data on the server in a database. Do not encode user and session in the url as this leads to session-hijacking even if the user only wants to show some friend a link.