Question

I want to know where do i get or how do i get the user details
such as username, id number and email when he/she logs-in in an intranet of
a corporate network using PHP?

I want to use those details to automatically authenticate user to the web-application
i am developing.

I have read about AUTH_USER but where or how do i access the variable?

Answer 1

You can do most of what you want via PHP LDAP functions. The only catch is that you would need to get a unique item to each user. You will have to do a little more research, but I am pretty sure that if you use IIS as the webserver rather than Apache, there is some quirk or trick to getting the logon/username of the person on the other end – which you could then use to query against LDAP in the following manner:

<?php
// $ds is a valid link identifier for a directory server

// $person is all or part of a person's name, eg "Jo"

$dn = "o=My Company, c=US";
$filter="(|(sn=$person*)(givenname=$person*))";
$justthese = array("ou", "sn", "givenname", "mail");

$sr=ldap_search($ds, $dn, $filter, $justthese);

$info = ldap_get_entries($ds, $sr);

echo $info["count"]." entries returned\n";
?>

Apache will just return AUTH_USER as blank. A workaround would be to create a one off request for their logon, store it in a cookie and use the same LDAP queries to get up-to-date info on the user.