PHP and Active Directory not playing nicely

Here is the scenario:

Active Directory Domain Controller named "bob"
bob is on the test.int domain
Linux Enterprise 3.0 server named "project" (not on the test.int domain)

I have a script on "project" that connects to the Active Directory on "bob" using ldap_connect, ldap_bind, etc...

A portion of the script is:
echo "<h3>LDAP query test</h3>\n";
echo "Connecting...";

// using ldap bind
$ldapdomainNB = 'test.int';
$ldaprdn  = 'admin';  // ldap rdn or dn (i.e., username)
$ldappass = 'somepass';  // associated password

$ds=ldap_connect("ldaps://bob's ip/");  // must be a valid LDAP server!
echo "OK. Connect result is " . $ds . "\n";


EVERYTHING IS FINE TILL THIS PART...

if ($ds) {

      ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, 3);

      # In order to perform the searches on Windows 2003 Server Active Directory you have to set the LDAP_OPT_REFERRALS option to 0:
      ldap_set_option($ds, LDAP_OPT_REFERRALS, 0);
      # Without this, you will get "Operations error" if you try to search the whole AD schema (using root of the domain as a $base_dn).
      # As opposed to Windows 2000 Server, where this option was optional and only increased the performance.


      echo "Binding...";
      $r=ldap_bind($ds, $ldapdomainNB.'\\'.$ldaprdn, $ldappass)
      
#      $r=ldap_bind($ds)                              // this is an "anonymous" bind, typically
            or exit(">>Could not bind to ldap host<<\n");            // read-only access
      echo "OK\n";


Here is the problem... IF I run this script - we'll call it ldap_test.php, from the browser - it gives a "page cannot be displayed"...
HOWEVER, if I go into the command line on the linux server and type:    php ldap_test.php it is able to bind and goes through the rest of the script and gives my results.

WHY can I not do this through the browser?  Why does it only work if I run the script via linux command line?  Has anybody run into this before and if so, any suggestions?

Thanks,
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