PHP 訪問LDAP

/** * @file ldap_util.php * * @author Li Yongfeng */function getUserEmail($userId) {    $ldap_host = "ldap://***/";     $ldap_user = "***";    $ldap_pwd = "***";    $ldap_conn = ldap_connect($ldap_host) or die("Can't connect to LDAP server");    ldap_set_option($ldap_conn, LDAP_OPT_REFERRALS, 0);        //this is necessary    ldap_set_option($ldap_conn, LDAP_OPT_PROTOCOL_VERSION, 3); //this is necessary    ldap_bind($ldap_conn, $ldap_user, base64_decode($ldap_pwd)) or die("Can't bind to LDAP server.");    $base_dn = "DC=corpusers,DC=net";    $filter = "(samaccountname=$userId)";    $justthese = array("name","mail");    //$result= ldap_search($ldap_conn, $base_dn, $filter) or exit(">>Unable to search ldap server<<");    $result= ldap_search($ldap_conn, $base_dn, $filter, $justthese) or exit(">>Unable to search ldap server<<");    if (!$result) {        echo "LDAP-Errno: " . ldap_errno($ldap_conn) . "
\n";        echo "LDAP-Error: " . ldap_error($ldap_conn) . "
\n";        die("Argh!
\n");    }    $entry= ldap_get_entries($ldap_conn, $result);    ldap_unbind($ldap_conn) or die("Can't unbind from LDAP server.");    $ret = new stdClass();    if ($entry['count'] > 0) {        $ret->name = $entry[0]['name'][0];        $ret->mail = $entry[0]['mail'][0];    }    //error_log(json_encode($ret));    return $ret;    }

