Remove Ability for Other Users to View Administrator in User List?

Hi @Carlos:

Try adding the following to your theme’s functions.php file, or in a .php file within a plugin that you might be writing (which works for WordPress 3.1.x):

add_action('pre_user_query','yoursite_pre_user_query');
function yoursite_pre_user_query($user_search) {
  $user = wp_get_current_user();
  if ($user->ID!=1) { // Is not administrator, remove administrator
    global $wpdb;
    $user_search->query_where = str_replace('WHERE 1=1',
      "WHERE 1=1 AND {$wpdb->users}.ID<>1",$user_search->query_where);
  }
}

If you have WordPress 3.0.x try this instead (since WordPress didn’t add the 'pre_user_query' hook until 3.1):

add_action('pre_user_search','yoursite_pre_user_search');
function yoursite_pre_user_search($user_search) {
  $user = wp_get_current_user();
  if ($user->ID!=1) { // Is not administrator, remove administrator
    global $wpdb;
    $user_search->query_where = str_replace('WHERE 1=1',
      "WHERE 1=1 AND {$wpdb->users}.ID<>1",$user_search->query_where);
  }
}