Check if user exists in one or more groups in Apple ldap tree

ldapconn.php

<?php

$ldapuser = 'user';
$ldappass = 'pass';

// Required groups
$groups = array('cn=group1', 'cn=group2');

// Ldap stuff
$directory = 'directory.example.dk';
$dc = 'dc=directory,dc=example,dc=dk';
$ldaprdn = 'uid=' . $ldapuser . ',cn=users,' . $dc;
$ldapgdn = 'cn=groups,' . $dc;

// connect to ldap server
$ldapconn = ldap_connect($directory)
    or die("Could not connect to LDAP server.");
ldap_set_option( $ldapconn, LDAP_OPT_PROTOCOL_VERSION, 3 );

if ($ldapconn) {
    // binding to ldap server
    // @ because we dont need the warning error
    $ldapbind = @ldap_bind($ldapconn, $ldaprdn, $ldappass);

    // Verify binding or die fast
    if (!$ldapbind) {
        print "LDAP bind failed...\n";
        exit;
    }

    // The user exists in the user tree. Now we need to find the groups he's in
    print "LDAP bind successful...\n";

    // Fetch the users of the required groups
    $query = ldap_search($ldapconn, $ldapgdn, '(|(' . implode($groups, ')(') . '))', array('cn', 'memberuid'));

    // Read all results from search
    $data = ldap_get_entries($ldapconn, $query);

    // Lets see if user is inside any of the required groups
    $user_groups = array();
    for ($i=0; $i < $data['count']; $i++) {
        if(in_array($ldapuser, $data[$i]['memberuid'])) {
            $user_groups[] = $data[$i]['cn'][0];
        }
    }

    // Did we find one or more?
    if($user_groups) {
        print "Found user in groups: " . implode($user_groups, ', ') . "\n";
    } else {
        print "Didnt find user in any of the required groups\n";
    }
}