How to do MySQL Table validation with PHP?

[Yepkoo]

        try
        {
            $sql_tablename=$connect_db->query("select *from tablename Where ID = '1' ");
            if ($sql_tablename->rowCount()>0)
            {
                $srg_tablename = $sql_tablename->fetch(PDO::FETCH_ASSOC);
                $read_columnname = $srg_tablename['columnname'];
            }
        }
        catch(PDOException $e)
        {
            echo '
            <div style="text-align:center;font-family:Arial;color:#CC0000;">Tables Not Found</div>';
            $connect_db = null;
        }