I'm using IIS, Win2000, PHP 4.1.2, IPlanet 5.1. When I try to delete or add an entry I receive the http header. This is a sample of the code:

if (!$ds=@ldap_connect($LDAP_SERVER[$SERVER_ID])) die("Unable to connect");

if (!@ldap_bind($ds,$gebruiker,$passw)) {
    $errno = ldap_errno($ds);
    // error 49 wrong password, error 32 unknown user
    if ($errno == 49 || $errno == 32) {
        //call login function
        showLogin();
    } else {
        die("Unable to bind");
}

if (!@ldap_delete($ds, $dn)) {
     $errno = ldap_errno($ds);
     //error 50 No Access
     if ($errno == 50) {
	showLogin($);
     } else {
        die ("Could not delete");
     }
}

What this should do is delete an entry by first connecting to the server, then bind to it and finally delete the specified entry.

When a bind is unsuccessful due to wrong access info a redirect to a login screen is forced. This also goes for when an object has insufficient right to delete the specified entry.

The function ldap_delete does return true or false, but when I don't have sufficient access rights to delete an entry (errno 50) the below http header is not processed by the webserver but returned to the browser instead.

X-Powered-By: PHP/4.1.2
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Location: http://www.somedomain.com/loginscreen.php
Content-type: text/html

This problem also occurs when I don't have proper rights to add an entry with ldap_add.

These problems do not occur when I run the code on a Unix system and a Apache webserver. So it might be the dll or IIS that's causing the problems.