I wanted to create a login and a user database in php and mysql.
I successfully created a php page which can add a username and password to the “users” table in a my_db database and then recall it and every other screenname on the next page.
But I don’t understand how the computer knows if you are “logged in”. 
For example, I do not have to log in every time I click on a link to a post here at kirupaforum.com; however, when I first arrive at the site I do have to type in my password and username.
Why Is That? :h:
In other words, how does the computer remember that i’m logged in?
Thanks,
Matt
