public function getPrimaryKey($table)
	{
		$keys = $this->getTableKeys($table);
		$key  = false;

		if ($keys && count($keys) > 0)
		{
			foreach ($keys as $k)
			{
				if ($k->Key_name == 'PRIMARY')
				{
					$key = $k->Column_name;
				}
			}
		}

		return $key;
	}