Symfony\Component\Form\Form::clientToNorm PHP Method

    private function clientToNorm($value)
    {
        if (!$this->clientTransformers) {
            return '' === $value ? null : $value;
        }

        for ($i = count($this->clientTransformers) - 1; $i >= 0; --$i) {
            $value = $this->clientTransformers[$i]->reverseTransform($value);
        }

        return $value;
    }