ReasonableFramework supports an SQL mapper it calls SQLX (SQL Extendable). The usage example is as follows:

1. Write the SQLX query map file: /storage/sqlx/gentleman.sqlx

SELECT (a.value + b.value) AS gentleman
    FROM mother a, father b
    WHERE a.id = b.object_id AND a.name = :aname

2. Write the helper (library) code with the SQLX query map file: /helper/gentleman.dbt.php

function coolguy() {
    $bind = array("aname" => "coolguy");
    $sql = get_bind_to_sqlx("gentleman", $bind);
    $rows = exec_db_fetch_all($sql, $bind);
    return $rows;
}

3. Use the code in the route (controller) code: /route/gentleman.php

loadHelper("gentleman.dbt");
var_dump(coolguy());

4. Check the response: Try connect to http://localhost/?route=gentleman in your web browser.