currently im using session to log in the user. but when i close the browser and open it again i have to log in again. how do you keeo the user logged in in lets say 2 weeks.
is it through cookies then?
currently im using session to log in the user. but when i close the browser and open it again i have to log in again. how do you keeo the user logged in in lets say 2 weeks.
is it through cookies then?
Yes. You use cookies to implement the "auto login" (or "remember me") functionality.
This google search or SO search results, should point you to a right direction.
Yes, you should do that using cookies. Here's the manual entry: http://php.net/manual/en/features.cookies.php
Alternately, you can take a look at this function: http://php.net/manual/en/function.session-set-cookie-params.php. It allows you to modify session cookie settings like its lifetime...
Read this: http://www.php.net/manual/en/session.configuration.php
The setting that you need is session.cookie_lifetime
. Session cookies (eg ones that do not have a lifetime) are deleted when the browser is closed. If you want the sessions to stay alive for longer, set that setting in php.ini
, httpd.conf
, or .htaccess
. Possibly even with ini_set
Edit: Actually you can use this function:
session_set_cookie_params (86400*30);
session_start()
86400*30 is 30 days.
See here: http://www.php.net/manual/en/function.session-set-cookie-params.php
So you want a "Remember me on this computer" option? Here's a language-agnostic way how you can do it:
cookie_id
and user_id
columns. If necessary also add a cookie_ttl
and ip_lock
. The column names speaks for itself I guess.cookie_id
and store this in the DB along with the user_id
. Also store this as cookie value of a cookie with a before specified cookie name. E.g. remember
. Give the cookie a long lifetime, e.g. one year.cookie_id
associated with the cookie name remember
. If it is there and it is valid according the DB, then automagically login the user associated with the user_id
and postpone the cookie age again.As to the security risks, if the key is long and mixed enough (at least 30 mixed chars), then the chances on brute-forcing the login are negligible. Further on you probably already understood what the optional column ip_lock
is to be used for. It should represent the IP address of the user. You could eventually add an extra checkbox "Lock login to this IP (only if you have a static IP)" so that the server can use the user's IP address as an extra validation.
And what if one hijacked the cookie value from an user without an IP lock? Well, there's not much to do against this. Live with it. The "remember me" thing is funny for under each forums and account-hijacks wouldn't hurt that much there, but I would certainly not use it for admin panels and that kind of webpages which controls the server-side stuff.
It's after all fairly straight forward. Good luck.