Sync Drupal roles to LDAP group

I dont know how I can transfer user roles from drupal to ldap with "ldap user module"

I make it with rules (on chenge account events and PHP action), I use "memberof" LDAP usser's attr

<?php
   /**
    * Created by PhpStorm.
    * User: trans
    * Date: 28.10.15
    * Time: 10:52
    */
   function f_ldapconnect()
      {
      $v_ldapUrl="ldap://192.168.1.141";
      $v_ldapPort     =389;

      $v_ldapCnctn=ldap_connect( $v_ldapUrl,$v_ldapPort ) or die( "Sorry! Could not connect to LDAP server {$v_ldapUrl}" );
      ldap_set_option( $v_ldapCnctn,LDAP_OPT_PROTOCOL_VERSION,3 );

      //$username="AdminUserName";
      $v_ldapPassword="pass!";
      $v_ldapUser  ="cn=Directory Manager";

      $v_ldapResult=ldap_bind( $v_ldapCnctn,$v_ldapUser,$v_ldapPassword ) or die( "Error: Couldn't bind to server using provided credentials!" );
      if( $v_ldapResult )
         {
         return $v_ldapCnctn;
         }
      else
         {
         die( "Error: Couldn't bind to server with supplied credentials!" );
         }
      }

   function f_getldapuserID( $p_connection,$p_username )
      {
      /* Write the below details as per your AD setting */
      $v_basedn="ou=People,dc=expert,dc=life";
      /* Search the user details in AD server */
      $v_searchResults=ldap_search( $p_connection,$v_basedn,$p_username );
      if( !is_resource( $v_searchResults ) )
         {
         die( 'Error in search results.' );
         }
      /* Get the first entry from the searched result */
      return ldap_first_entry( $p_connection,$v_searchResults );
      }

   /*(1) poluchim soedenenie*/
   $user_name="(uid={$account->name})";
   $v_ldapConnection=f_ldapconnect();
   $v_ldapUserID=f_getldapuserID( $v_ldapConnection,$user_name );
   $v_ldapUserDN   =ldap_get_dn( $v_ldapConnection,$v_ldapUserID );
   $v_ldapUserATTRS=ldap_get_attributes($v_ldapConnection, $v_ldapUserID);


   /*(2) udalim starie atributy*/
   $v_memberof_forDEL=array();
   $v_memberof_forDEL['memberOf']=array();
   foreach($v_ldapUserATTRS['memberOf'] as $v_grp)
      if(strlen($v_grp)>5)
         {
         //drupal_set_message( '<pre>'.print_r( $v_grp,true ).'</pre>' );
         $v_memberof_forDEL['memberOf'][]=$v_grp;
         }
   $result_1=ldap_mod_del($v_ldapConnection,$v_ldapUserDN,$v_memberof_forDEL);
   if( $result_1 )
      {
      //drupal_set_message( "Succsess: User{$user_name} roles deleted" );
      }
   else
      {
      drupal_set_message( "ERROR!!!:  User{$user_name} roles NOT deleted" );
      }


   /*(3) dobavim atributy*/
   $v_member_new=array();
   $v_member_new['memberOf']=array();;
   foreach($account->roles as $role)
      {
      $v_member_new['memberOf'][]="cn={$role},ou=Groups,dc=expert,dc=life"; ;
      //drupal_set_message( '<pre>'.print_r( $role,true ).'</pre>' );
      }
   $result_2 = ldap_mod_add($v_ldapConnection, $v_ldapUserDN, $v_member_new);

   //drupal_set_message( '<pre>'.print_r( $v_member_new,true ).'</pre>' );
   //drupal_set_message( '<pre>'.print_r( $v_ldapUserATTRS,true ).'</pre>' );
   if( $result_2 )
      {
      //drupal_set_message( "Succsess: User{$user_name} roles GRANTED" );
      }
   else
      {
      drupal_set_message( "ERROR!!!: User{$user_name} roles NOT GRANTED" );
      }

   ldap_close($v_ldapConnection);