function get_group_members($group_id, $cols = COLS_ALL_RS, $maybe_metagroup = false, $args = array())
{
global $wpdb;
// If $group_id is an array of group objects, extract IDs into a separate array
if (is_array($group_id)) {
$first = current($group_id);
if (is_object($first)) {
$actual_ids = array();
foreach ($group_id as $group) {
$actual_ids[] = $group->ID;
}
$group_id = $actual_ids;
}
}
if (empty($args['status'])) {
$status = 'active';
} elseif ('any' == $args['status']) {
$args['no_cache'] = true;
$status = '';
} else {
$args['no_cache'] = true;
$status = $args['status'];
}
if (!is_array($group_id) && empty($args['no_cache'])) {
$cache_flag = 'group_members';
$cache_id = $group_id;
$cache = wpp_cache_get($cache_id, $cache_flag);
$ckey = md5(serialize($cols) . $maybe_metagroup);
if (isset($cache[$ckey])) {
return $cache[$ckey];
}
}
$group_in = "'" . implode("', '", (array) $group_id) . "'";
$status_clause = $status ? "AND status = '{$status}'" : '';
if (COL_ID_RS == $cols) {
$query = "SELECT gu.{$wpdb->user2group_uid_col} \r\n\t FROM {$wpdb->user2group_rs} gu\r\n\t WHERE gu.{$wpdb->user2group_gid_col} IN ({$group_in}) {$status_clause}";
if (!($results = scoper_get_col($query))) {
$results = array();
}
} else {
switch ($cols) {
case COLS_ID_DISPLAYNAME_RS:
$qcols = "u.ID, u.display_name";
break;
case COLS_ID_NAME_RS:
$qcols = "u.ID, u.user_login AS display_name";
// calling code assumes display_name property for user or group object
break;
default:
$qcols = "u.*";
}
$query = "SELECT {$qcols} FROM {$wpdb->users} AS u" . " INNER JOIN {$wpdb->user2group_rs} AS gu ON gu.{$wpdb->user2group_uid_col} = u.ID {$status_clause} " . " AND gu.{$wpdb->user2group_gid_col} IN ({$group_in}) ORDER BY u.display_name";
$results = scoper_get_results($query);
}
if ($maybe_metagroup && (is_array($group_id) || !$results)) {
$meta_ids = scoper_get_col("SELECT group_meta_id FROM {$wpdb->groups_rs} WHERE {$wpdb->groups_id_col} IN ({$group_in})");
foreach ($meta_ids as $meta_id) {
if (0 === strpos($meta_id, 'wp_role_')) {
$role_name = substr($meta_id, 8);
if ($_results = ScoperAdminLib::get_blogrole_users($role_name, 'wp', $cols)) {
$results = array_merge($results, $_results);
}
}
}
}
if (!is_array($group_id) && empty($args['no_cache'])) {
$cache[$ckey] = $results;
wpp_cache_set($cache_id, $cache, $cache_flag);
}
return $results;
}
