+}
+
+function expand_groups($a) {
+ if(! (is_array($a) && count($a)))
+ return array();
+ $groups = implode(',', $a);
+ $groups = dbesc($groups);
+ $r = q("SELECT `contact-id` FROM `group_member` WHERE `gid` IN ( $groups )");
+ $ret = array();
+ if(count($r))
+ foreach($r as $rr)
+ $ret[] = $rr['contact-id'];
+ return $ret;
+}