core-bundle/src/Resources/contao/library/Contao/Database.php
public function listTables($strDatabase=null, $blnNoCache=false)
	{
		if ($blnNoCache || !isset($this->arrCache[$strDatabase]))
		{
			$strOldDatabase = $this->resConnection->getDatabase();

			// Change the database
			if ($strDatabase !== null && $strDatabase != $strOldDatabase)
			{
				$this->setDatabase($strDatabase);
			}

			$this->arrCache[$strDatabase] = $this->resConnection->getSchemaManager()->listTableNames();

			// Restore the database
			if ($strDatabase !== null && $strDatabase != $strOldDatabase)
			{
				$this->setDatabase($strOldDatabase);
			}
		}

		return $this->arrCache[$strDatabase];
	}
public function listTables($strDatabase=null, $blnNoCache=false)
	{
		if ($blnNoCache || !isset($this->arrCache[$strDatabase]))
		{
			$strOldDatabase = $this->resConnection->getDatabase();

			// Change the database
			if ($strDatabase !== null && $strDatabase != $strOldDatabase)
			{
				$this->setDatabase($strDatabase);
			}

			$this->arrCache[$strDatabase] = $this->resConnection->getSchemaManager()->listTableNames();

			// Restore the database
			if ($strDatabase !== null && $strDatabase != $strOldDatabase)
			{
				$this->setDatabase($strOldDatabase);
			}
		}

		return $this->arrCache[$strDatabase];
	}
Return all tables as array

@param string  $strDatabase The database name
@param boolean $blnNoCache  If true, the cache will be bypassed

@return array An array of table names