gistfile1.php

<?php

class Result
{
    public function fetch()
    {
        static $rows = [
          ['id' => 1, 'name' => 'one', 'value' => 1.0],
          ['id' => 2, 'name' => 'two', 'value' => 2.0],
          ['id' => 3, 'name' => 'three', 'value'=> 3.00],
        ];

        $row = array_pop($rows);

        return $row;
    }

    public function close() { }
}

class RowModel
{
    protected $id;

    protected $name;

    protected $value;

    /**
     * @return mixed
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * @param mixed $id
     * @return static
     */
    public function setId($id)
    {
        $this->id = $id;
        return $this;
    }

    /**
     * @return mixed
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * @param mixed $name
     * @return static
     */
    public function setName($name)
    {
        $this->name = $name;
        return $this;
    }

    /**
     * @return mixed
     */
    public function getValue()
    {
        return $this->value;
    }

    /**
     * @param mixed $value
     * @return static
     */
    public function setValue($value)
    {
        $this->value = $value;
        return $this;
    }
}

class RowHydrator
{
    public function hydrate($object, $data)
    {
        /** @var RowModel $model */
        $model = clone $object;
        $model->setId($data['id'])
            ->setName($data['name'])
            ->setValue($data['value']);

        return $model;
    }
}

$result = new Result();
$hydrator = new RowHydrator();

$collection = function () use ($result, $hydrator) {
    while ($row = $result->fetch()) {
        yield $row;
    }

    $result->close();
};

// never gets executed.
foreach ($collection as $model) {
    echo $model->getName(), ': ', $model->getValue(), PHP_EOL;
}