Restricting multiple login

[DeCal]

How can I restrict multiple login to my website? i want to allow only one login at a time from one ip

[bwfield]

youll have to change something in your htacess file

[jhing]

You should use database which you are using for authentication checking set a flag field for login if one person logged in then set the value to 1. And you can check it for login. .htaccess cant be used in case of different ips login you have to use database for it