Roles People Play in Thinking Domains

//
// Reads and caches rights for an author and optional group for that author
// Returns compiled rights for that author as an array.
//
$groupRights = array();
$authorRights = array();
$myRights = array(
    // Default domain rights
    'right-domain-tag' => 1,
    'right-domain-comment' => 1,
    'right-create-group' => 1,
    'right-owner-think' => 1,
    'right-member-think' => 1,
);
function authorRights($uid, $gid = null) {
    global $authorRights, $groupRights, $myRights;
    if (!empty($gid)) {
        if (!@$groupRights[$gid]) {
            $result = myQuery("SELECT object FROM quads WHERE context IN ({1},'domain') AND subject IN ({2},'all') AND verb = 'rights' ORDER BY subject DESC, context DESC", $gid, $uid);
            $rights = myTable($result);
            if (!empty($rights)) {
                $groupRights[$gid] = 1;
                foreach ($rights as $v) {
                    $r = json_decode($v['object']);
                    foreach ($r as $rt => $ic) {
                        $myRights[$rt] = $ic;
                    }
                }
            }
        }
    }
    else {
        if (!@$authorRights[$uid]) {
            $result = myQuery("SELECT object FROM quads WHERE context = 'domain' AND subject = {1} AND verb = 'rights'", $uid);
            $rights = myTable($result);
            if (!empty($rights)) {
                $authorRights[$uid] = 1;
                foreach ($rights as $v) {
                    $r = json_decode($v['object']);
                    foreach ($r as $rt => $ic) {
                        $myRights[$rt] = $ic;
                    }
                }
            }
        }
    }
    return $myRights;
}