cannot ldapadd in freebsd prompt, but ldap_add() in php is ok ?

From: jiing (jiing.deng_at_gmail.com)
Date: 01/31/05 

Date: 31 Jan 2005 01:27:31 -0800

under freebsd prompt, I typed
ldapadd -f tester.ldif -x -D "uid=tester, ou=People, dc=aitc, dc=com,
dc=tw" -w orson
then
ldap_bind: Invalid credentials (49)
using whoami, I am root, so I think I have the right to do that
I use ldapsearch to search other entries is ok.

my tester.ldif is
dn: dc=aitc, dc=com, dc=tw
objectClass: top
objectClass: account
objectClass: posixAccount
dc: aitc

dn: uid=tester, ou=People, dc=aitc, dc=com, dc=tw
cn= Tester

but when I looked at the /usr/local/etc/openldap/slapd.conf
, the rootpw is orson (cleartext, I am testing)

but when I use php to write some code to add user, it works (I use
ldapbrowser to see the added entry)

<?php
$ldapServer="ldap://192.168.1.211";
$ldapPort="389";
$ldapconn=ldap_connect($ldapServer,$ldapPort);
$ldaprdn="uid=root, ou=People, dc=aitc, dc=com, dc=tw";
$ldappass="orson";

   if($ldapconn){
            echo "connect to ".$ldapServer." successfully \n<br>";
   }else{
      echo "can't connect to LDAP server!\n<br>";
   }
   ldap_set_option($ldapconn, LDAP_OPT_PROTOCOL_VERSION, 3);
   
   if ($ldapconn) {
      // binding to ldap server to give update access
      $ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);
      // verify binding
      if ($ldapbind) {
          echo "LDAP binding successful...\n";
      } else {
          echo "LDAP binding failed...\n";
      }
   }
  
   //data preparation
   //I am not very sure what attribute should be filled
   $data["uid"]="tester";
   $data["cn"]="Tester 1";
   $data["objectclass"][0]="account";
   $data["objectclass"][1]="posixAccount";
   $data["objectclass"][2]="top";
   $data["userpassword"]="";
   $data["loginshell"]="/usr/local/bin/bash";
   $data["uidnumber"]=3100;
   $data["gidnumber"]=3100;
   $data["homedirectory"]="/home/tester";
   $data["gecos"]="Tester 1";
  
   // Before ldap_add(), should check the user already exists or not
   if(!ldap_add($ldapconn,"uid=tester, ou=People, dc=aitc, dc=com,
dc=tw", $data)){
     echo "There is a problem to create the account\n";
     echo "Please contact your administrator!\n";
     exit;
    }else{
     echo "account creation successfully";
    }
   ldap_close($ldapconn);
?>

Does anyone know what's wrong with it?
I use openldap mount in freebsd

Thanks in advance.

-jiing-