CStatistics::CleanUpVisits

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