log 404 in content part

gistfile1.txt

// log 404 in content part
$lastStatus = \CHTTP::GetLastStatus();
if ((constant('ERROR_404') == 'Y' || strpos($lastStatus, '404') !== false)
	&& $APPLICATION->GetCurPage() != '/404.php'
) {
	/*
		CREATE TABLE `hi_seo_error404log` (
		  `ID` int(11) unsigned NOT NULL AUTO_INCREMENT,
		  `UF_DATETIME` datetime DEFAULT NULL,
		  `UF_URL` text,
		  `UF_REFERER` text,
		  `UF_USER_AGENT` text,
		  `UF_ADDR` text,
		  PRIMARY KEY (`ID`),
		  KEY `IDX_DT` (`UF_DATETIME`)
		);
	 */
	$error404TableEntity = Bitrix\Main\ORM\Entity::compileEntity('Error404LogTable', [
		new Bitrix\Main\ORM\Fields\IntegerField('ID', [
			'primary' => true
		]),
		new Bitrix\Main\ORM\Fields\DatetimeField('UF_DATETIME'),
		new Bitrix\Main\ORM\Fields\TextField('UF_URL'),
		new Bitrix\Main\ORM\Fields\TextField('UF_REFERER'),
		new Bitrix\Main\ORM\Fields\TextField('UF_USER_AGENT'),
		new Bitrix\Main\ORM\Fields\TextField('UF_ADDR'),
	], [
		'table_name' => 'hi_seo_error404log'
	]);

	$r = $error404TableEntity->getDataClass()::add([
		'UF_DATETIME'		=> \Bitrix\Main\Type\DateTime::createFromTimestamp(time()),
		'UF_URL'			=> $APPLICATION->GetCurPageParam("", [], false),
		'UF_REFERER'		=> $_SERVER['HTTP_REFERER'], // . var_export($_SERVER, true),
		'UF_USER_AGENT'		=> $_SERVER['HTTP_USER_AGENT'],
		'UF_ADDR'			=> $_SERVER['REMOTE_ADDR']
	]);
}