Balasubramanyam A wrote:
I've written a simple application, where users need to login to access the
features of the application. I want to develop login system such that, if
user is already logged in, the application should not allow the users to
login with the same login credentials. How do I accomplish this?
Just save the credentials, for a valid user, in a session and check to see if a
new login submission matches.
Be certain to lowercase everything so as to prevent a simple case change from
appearing to be a different user.
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