//Connect to database $pdo = new PDO('mysql:host=localhost;dbname=myDB', 'username', 'password'); //Prepare SQL query $sql = "SELECT * FROM my_table"; //Instantiate the model $model = new MyModel($pdo); //Execute query and retrieve data $data = $model->read($sql); //Process data foreach($data as $row) { echo $row['id'] . ' ' . $row['name']; }In the example above, the function 'read' is used to execute the SQL query and retrieve the data from the database. It is used in conjunction with a PHP model class named 'MyModel' and a PDO object to connect to the database. The retrieved data is then processed and displayed using a loop. The package library used for PHP Model read may vary depending on the developer's preference, but some popular ones include the Doctrine ORM package, the Laravel Eloquent package, and the Symfony Doctrine DBAL package.