help me.... please... logins

aurora2004

Good evenings

Multiples Logins

¡ i want is to prevent the same user name and password to be used simultaneosly in different computers!

thank you very much, I give you in advance the greetings to help me with my problem, please if you dont understand my question you can send me a private message or reply in the same forum, thanks a lot for your help...

If it is possible that they explain to me with an example would be beneficial for my, since at this moment is that I am learning php and I must solve this problem for a project... thanks a lot for your help...🙁

jordy

Aurora,

This is almost impossible to code. The problem is to identify the computer. A way to identify a computer is fetching the IP ($_SERVER['REMOTE_ADDRESS']) but for dailin users this changes everytime they dial in. The second method is by using cookies, but lots of people does not accept them automaticly (like me). And cookies are quite easy to clean up.

So unfortunately.. more impossible as possible..

Jordy

DonChris

don't think too complicated:
if you store session-info in a database and 'know' the sessions which are logged-in, simply overwrite the previous session for one user with the new one - means the first session will not be valid any more...
this way nobody can be logged-in from two computers/browsers at one time.

hth
chris

jordy

Urrrrmm i guess i read the post wrong.. i thought the login data needed to be linked to the computer.. so that the user only can use the login on that specific computer. Dual logins can be prevented to store the sessiondata in a db indeed..

DonChris

' hope that I understood aurora's post 🙂

laserlight

It doesnt prevent simultaneous access to a given account, since the session can be shared (or hijacked, depending on how you look at it).

aurora2004

Ok... Mr. DonChris

Sorry, excuse my grammar, but my first language is the spanish... and I am not good in English...

you gave in the point, is that what I need to make the dilemma is that I only have just a short time studying php and to entrusted to me to do this and I do not know like...🙁 help me please

celibate54

you could always have some sort of loginSuccess function...so if user A logs in then in table login his A and his login IP are recorded...

then when person B tries to log in as "A" it can check to see if A is already on and if he is on what ip. it can then display an error message of "A is already logged in from $aIpAddress....

and to prevent 'more than one account from one user':

not fool proof...but you can just make it so one ip per account and have a loginCheck function for that...and they are on dialup, i'm not sure if it is worth the trouble to try to write some sort of loop that could filter what could be perceived as a 'double account'...email verification could help prevent alot of the problems here.