CStatistics::CleanUpCities

static function CleanUpCities()
{
	set_time_limit(0);
	ignore_user_abort(true);
	$err_mess = "File: ".__FILE__."
Line: ";
	$DB = CDatabase::GetModuleConnection('statistic');
	$DAYS = intval(COption::GetOptionString("statistic", "CITY_DAYS"));
	if($DAYS >= 0)
	{
		$strSql = "
			DELETE FROM b_stat_city_day
			WHERE DATE_STAT <= DATE_SUB(CURDATE(),INTERVAL $DAYS DAY)
		";
		$DB->Query($strSql, false, $err_mess.__LINE__);
		if (COption::GetOptionString("statistic", "USE_AUTO_OPTIMIZE")=="Y")
		{
			$DB->Query("OPTIMIZE TABLE b_stat_city_day", false, $err_mess.__LINE__);
		}
	}
}