this is a simple php login class i wrote for use with all of my sites for the past 4 years or so. you tell it what database to pull the username from, the columns for the user_name and password, whether or not you used crypt() on the password in the database, what you want the session name to be, and it will go ahead, try to login, then spit back a nice session hash containing information from columns you chose for it. its nothing spectacular, but im putting it on google code for the sake of putting it on google code
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