$rcMax = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', '', __METHOD__ );
if ( $rcMax ) {
$cTime = $dbr->selectField( 'querycache_info',
$rcMax = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', '', __METHOD__ );
if ( $rcMax ) {
$cTime = $dbr->selectField( 'querycache_info',