WordPress hook that is called when an user visit an website

You could try the ‘wp‘ action. That will be run on every page load.

Your web server will have the visitors IP address under $_SERVER [‘REMOTE_ADDR’];

Is there any way to know which page user is accessing

The requested URL is also in the $_SERVER array. There will also be data on the request from get_queried_object(), but at the time “wp” action fires, the queried object has not been established yet. You’d need a later hook, or glean the requested data through the “request” filter.

I am using ‘body_class’ filter hook to retrieve the IP information of users visited. Although sometime it is called multiple times for single request, it still works for my purpose.

Also I need to get the page details which the user has visited. $_SERVER doesn’t contain that information. Any idea ?

Thanks !!!

You can find everything that is contained on $_SERVER on it’s page.

When you say this:

Also I need to get the page details which the user has visited

Do you mean the page that the user is currently on, the referring page (last page visited), or a page or pages that a user has visited before the current page view?

it is called multiple times for single request

That happens more often than most people realize. For callbacks where it’s important they only run once per request, a callback can remove itself from the call stack after one pass with remove_action() or remove_filter().

@catacaustic

I am using this code for URI display and looks like it works fine :

$parts = parse_url( home_url() );
$current_uri = "{$parts['scheme']}://{$parts['host']}" . add_query_arg( NULL, NULL );