core-bundle/src/Resources/contao/library/Contao/Automator.php
public function purgeSearchTables()
	{
		$objDatabase = Database::getInstance();

		// Truncate the tables
		$objDatabase->execute("TRUNCATE TABLE tl_search");
		$objDatabase->execute("TRUNCATE TABLE tl_search_index");

		$strCachePath = StringUtil::stripRootDir(System::getContainer()->getParameter('kernel.cache_dir'));

		// Purge the cache folder
		$objFolder = new Folder($strCachePath . '/contao/search');
		$objFolder->purge();

		// Add a log entry
		$this->log('Purged the search tables', __METHOD__, TL_CRON);
	}
public function purgeSearchTables()
	{
		$objDatabase = Database::getInstance();

		// Truncate the tables
		$objDatabase->execute("TRUNCATE TABLE tl_search");
		$objDatabase->execute("TRUNCATE TABLE tl_search_index");

		$strCachePath = StringUtil::stripRootDir(System::getContainer()->getParameter('kernel.cache_dir'));

		// Purge the cache folder
		$objFolder = new Folder($strCachePath . '/contao/search');
		$objFolder->purge();

		// Add a log entry
		$this->log('Purged the search tables', __METHOD__, TL_CRON);
	}
Purge the search tables