Undefined variable: banner

File: /mnt/pc-www/dod/manage/siteFunctions.inc.php (852) Error 8

848	 	dbQuery($sql);
849		if(defined("NO_LOW_PRIORITY") && file_exists('low_priority.banner.sql'))
850			file_put_contents('low_priority.banner.sql', $sql . ";\n", FILE_APPEND);
851	}
852	return $<u>banner</u>;
853}
854
855if( ! function_exists('dbExists')){
856	function dbExists($table, $rec){
857		if($table == 'content' && $rec['content_category'] == 4 && $rec['content_track'] == 130 && ($rec['content_created'] - $rec['content_posted']) > 2592000)