If your search result is larger then the directory limit, it will just show you the maximum number of return entries possible by the directory (.e.g 2000 in some ActiveDirectories)
    (PHP 4, PHP 5, PHP 7, PHP 8)
ldap_count_entries — Count the number of entries in a search
Returns the number of entries stored in the result of previous search operations.
ldapAn LDAP\Connection instance, returned by ldap_connect().
resultAn LDAP\Result instance, returned by ldap_list() or ldap_search().
   Returns number of entries in the result, 或者在失败时返回 false.
  
| 版本 | 说明 | 
|---|---|
| 8.1.0 | The ldapparameter expects an LDAP\Connection
  instance now; previously, a 资源(resource) was expected. | 
| 8.1.0 | The resultparameter expects an LDAP\Result
  instance now; previously, a 资源(resource) was expected. | 
Example #1 ldap_count_entries() example
Retrieve number of entries in the result.
// $ds is a valid link identifier (see ldap_connect)
     $dn        = 'ou=example,dc=org';
     $filter    = '(|(sn=Doe*)(givenname=John*))';
     $justthese = array('ou', 'sn', 'givenname', 'mail');
     $sr = ldap_search($ds, $dn, $filter, $justthese);
     var_dump(ldap_count_entries($ds, $sr));
以上例程的输出类似于:
     int(1)
     
If your search result is larger then the directory limit, it will just show you the maximum number of return entries possible by the directory (.e.g 2000 in some ActiveDirectories)