MySQL dynamic link to fetch the right row

Question

I have a MySQL-database with x rows. Now I want to interpret a link, fetch the right row and print this values.

E.g. Link: .html?row=3 -> Opens site which fetch row 3

Answer 1

mysql/data_access.php

 PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_EMULATE_PREPARES => false,
    PDO::ATTR_PERSISTENT => true,
)) {
    $dsn = getDsn($host, $dbname, $port, $charset);
    $connection = new PDO($dsn, $username, $password);
    foreach ($options as $key => $value) {
        $connection->setAttribute($key, $value);
    }
    return $connection;
}

/**
 * Create a mysql DSN string.
 * 
 * @param string $host Host.
 * @param string $dbname Database name.
 * @param string $port [optional] Port.
 * @param array $charset [optional] Character set.
 * @return string DSN string.
 */
function getDsn($host, $dbname, $port = '3306', $charset = 'utf8') {
    $dsn = sprintf('mysql:host=%s;port=%s;dbname=%s;charset=%s'
            , $host
            , $port
            , $dbname
            , $charset
    );
    return $dsn;
}

/**
 * Close a db connection.
 * 
 * @param PDO $connection Db connection.
 * @return void
 */
function closeConnection($connection) {
    $connection = NULL;
}

/**
 * Get the data type of a binding value.
 * 
 * @param mixed $value Binding value.
 * @return mixed Data type of the binding value.
 */
function getInputParameterDataType($value) {
    $dataType = PDO::PARAM_STR;
    if (is_int($value)) {
        $dataType = PDO::PARAM_INT;
    } elseif (is_bool($value)) {
        $dataType = PDO::PARAM_BOOL;
    }
    return $dataType;
}

---

error_reporting.php

---

print.php

' . print_r($data, true) . '

'; } else { echo $data; } }

---

deli_list.php

prepare($sql);
        if (!$statement) {
            throw new Exception('The SQL statement can not be prepared!');
        }

        // Bind values to sql statement parameters.
        $statement->bindValue(':id', $id, getInputParameterDataType($id));

        // Execute and check PDO statement.
        if (!$statement->execute()) {
            throw new Exception('The PDO statement can not be executed!');
        }

        // Fetch person details.
        $fetchedData = $statement->fetchAll(PDO::FETCH_ASSOC);

        closeConnection($connection);
    } catch (PDOException $pdoException) {
        printData($pdoException->getMessage());
        exit();
    } catch (Exception $exception) {
        printData($exception->getMessage());
        exit();
    }
}
?>



    
        
        
    
    

        
        

            
                

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