ldap_control_paged_result

(PHP 5 >= 5.4.0)

ldap_control_paged_result — Send LDAP pagination control

说明

bool ldap_control_paged_result ( resource $link , int $pagesize [, bool $iscritical = false [, string $cookie = "" ]] )

Enable LDAP pagination by sending the pagination control (page size, cookie...).

参数

link: An LDAP link identifier, returned by ldap_connect() .
pagesize: The number of entries by page.
iscritical: Indicates whether the pagination is critical of not. If true and if the server doesn't support pagination, the search will return no result.
cookie: An opaque structure sent by the server ( ldap_control_paged_result_response() ).

返回值

成功时返回 TRUE ，或者在失败时返回 FALSE 。

范例

The example below show the retrieval of the first page of a search paginated with one entry by page.

Example #1 LDAP pagination

  <?php
      // $ds is a valid link identifier (see ldap_connect)
      ldap_set_option ( $ds ,  LDAP_OPT_PROTOCOL_VERSION ,  3 );

      $dn         =  'ou=example,dc=org' ;
      $filter     =  '(|(sn=Doe*)(givenname=John*))' ;
      $justthese  = array( 'ou' ,  'sn' ,  'givenname' ,  'mail' );

      // enable pagination with a page size of 1.
      ldap_control_paged_result ( $ds ,  1 );

      $sr  =  ldap_search ( $ds ,  $dn ,  $filter ,  $justthese );

      $info  =  ldap_get_entries ( $ds ,  $sr );

     echo  $info [ 'count' ] .  ' entries returned'  .  PHP_EOL ;

The example below show the retrieval of all the result paginated with 100 entries by page.

Example #2 LDAP pagination

  <?php
      // $ds is a valid link identifier (see ldap_connect)
      ldap_set_option ( $ds ,  LDAP_OPT_PROTOCOL_VERSION ,  3 );

      $dn         =  'ou=example,dc=org' ;
      $filter     =  '(|(sn=Doe*)(givenname=John*))' ;
      $justthese  = array( 'ou' ,  'sn' ,  'givenname' ,  'mail' );

      // enable pagination with a page size of 100.
      $pageSize  =  100 ;

      $cookie  =  '' ;
     do {
          ldap_control_paged_result ( $ds ,  $pageSize ,  true ,  $cookie );

          $result   =  ldap_search ( $ds ,  $dn ,  $filter ,  $justthese );
          $entries  =  ldap_get_entries ( $ds ,  $result );
             
         foreach ( $entries  as  $e ) {
             echo  $e [ 'dn' ] .  PHP_EOL ;
         }

          ldap_control_paged_result_response ( $ds ,  $result ,  $cookie );
       
     } while( $cookie  !==  null  &&  $cookie  !=  '' );

注释

Note:

Pagination control is a LDAPv3 protocol feature.

参见

ldap_control_paged_result_response() - Retrieve the LDAP pagination cookie
» RFC2696 : LDAP Control Extension for Simple Paged Results Manipulation

用户评论:

[#1] dublue at gmail dot com [2014-04-09 13:02:46]

So how do you now sort the entire result? It appears you can't use ldap_sort as it uses the search resource which is within the loop.

[#2] Blizzz [2013-10-21 15:26:50]

If you did a paged search operation and want to do any other read operation on LDAP, you need to reset it, otherwise you will experience LDAP errors (code 12, for instance).

<?php ?? ldap_control_paged_result($link, 0); ?? ?>

[#3] jestertrance at hotmail dot com [2013-03-06 17:44:53]

You may need to do an ldap_bind before running ldap_control_paged_result to get this to work:

$conn = ldap_connect("you_ip");
ldap_set_option($conn, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_bind("your_connection_info");
ldap_control_paged_result($conn, $pageSize, true, $cookie)

Without doing an ldap_bind, I kept getting the error "Critical extension is unavailable". I don't if this is standard knowledge, but knowing this would have saved me days of frustration.

[#4] etienne at lamaisondebarbie dot ch [2012-04-30 15:14:23]

Paged results, as specified in the RFC 2696, does not allow to get over the server sizeLimit. The RFC clearly states "If the page size is greater than or equal to the sizeLimit value, the server should ignore the control as the request can be satisfied in a single page".
With OpenLDAP, you will not get more than the sizeLimit number of entries with paged results.

[#5] James [2012-04-14 00:56:08]

I was able to get these functions to work successfully with Active Directory. When I first tried it, ldap_search kept returning a Not Supported reply from the server. I finally figured out that I needed to include

ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, 3);

in my code, so that AD would let me page results. Make sure you're using a compatible protocol.

Hope this note helps someone else.