How to recognise a client visiting my site without being logged in

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i am trying to build a cart for a ecommerce website. i want to know how can i keep track for user who are not logged in.

What I have tried:

i tried using remote addr but it seems to be changing for user

Posted 13-Jun-17 5:29am

Member 13240406

Updated 13-Jun-17 5:39am

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OriginalGriff · Accepted Answer · 2017-06-13T05:39:00

Solution 2

You can't trust IP addresses at all: not only can they change (as the user moves around on a mobile, or laptop, or when the router is reset), they are also shared by all users connected to a single router - so all employees at the same company would share the same IP address.

Instead, use cookies to store the tracking id or a shopping cart on the user device - that way it moves with the user, he doesn't lose it, and his purchases aren't shared with other users. There is loads of info complete with example code available via Google: cookies php[^]

Posted 13-Jun-17 5:39am

OriginalGriff

Comments

Member 13240406 13-Jun-17 11:51am

ok i got what u said can we access system private ip address by php.

Richard Deeming 13-Jun-17 12:00pm

You can't access the private IP address at all. And it wouldn't make sense if you could - it's private precisely because it doesn't make sense outside of the local network.

OriginalGriff 13-Jun-17 12:04pm

No, it doesn't propagate beyond the router, and even if you could, it would match millions of others: mine is currently 192.168.0.5 (but it may not be tomorrow) and yours is probably very, very similar!

Member 13240406 13-Jun-17 12:10pm

thanx to all for your support !!!

Richard Deeming · Accepted Answer · 2017-06-13T05:39:00

Solution 1

Simple: you use cookies[^].

Posted 13-Jun-17 5:39am

Richard Deeming

Comments

Member 13240406 13-Jun-17 11:40am

cant they be edited by the user. is there any other way.

Richard Deeming 13-Jun-17 11:42am

Yes they can, and no there isn't.

Member 13240406 13-Jun-17 11:54am

can i give unlimited time limit to a cookie .pls also tell how can i do so

Richard Deeming 13-Jun-17 11:59am

You can set an expiry date a long time in the future - say 10 years.

NB: At the moment, you probably don't want to set the expiry date to 2038 or later, due to the UNIX epoch bug.

Member 13240406 13-Jun-17 12:09pm

thanx to all for ur support !!!