Hardcoding

<?php

/* -- inside the class --*/
    public function select($reqSelect, $parameters = array(':id' => $id_to_select)) {
        try {
            $this->con = parent::beginTransaction();
            $result = parent::prepare($reqSelect);

            $result->execute($parameters);

            //$this->con = parent::commit();
            $this->con = parent::rollBack();

            return $result;

            $result->closeCursor();
        } catch (Exception $e) {
            die('Error:' . $e->getMessage());
        }
}
/* -- inside the class --*/

   $mysql = new Mysql();
   $mysql->select('SELECT * FROM articles WHERE id = :id ');

?>