core-bundle/src/Resources/contao/library/Contao/Database.php
public function tableExists($strTable, $strDatabase=null, $blnNoCache=false)
	{
		if ($strTable == '')
		{
			return false;
		}

		return \in_array($strTable, $this->listTables($strDatabase, $blnNoCache));
	}
public function tableExists($strTable, $strDatabase=null, $blnNoCache=false)
	{
		if ($strTable == '')
		{
			return false;
		}

		return \in_array($strTable, $this->listTables($strDatabase, $blnNoCache));
	}
Determine if a particular database table exists

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

@return boolean True if the table exists