DateTimeToTimestampTransformer example

        }

        if ('datetime_immutable' === $options['input']) {
            $builder->addModelTransformer(new DateTimeImmutableToDateTimeTransformer());
        } elseif ('string' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToStringTransformer($options['model_timezone'], $options['model_timezone'], $options['input_format'])
            ));
        } elseif ('timestamp' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToTimestampTransformer($options['model_timezone'], $options['model_timezone'])
            ));
        } elseif ('array' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToArrayTransformer($options['model_timezone'], $options['model_timezone'], $parts)
            ));
        }

        if (\in_array($options['input'], ['datetime', 'datetime_immutable'], true) && null !== $options['model_timezone']) {
            $builder->addEventListener(FormEvents::POST_SET_DATA, static function DFormEvent $event) use ($options): void {
                $date = $event->getData();

                

        }

        if ('datetime_immutable' === $options['input']) {
            $builder->addModelTransformer(new DateTimeImmutableToDateTimeTransformer());
        } elseif ('string' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToStringTransformer($options['model_timezone'], $options['model_timezone'], $options['input_format'])
            ));
        } elseif ('timestamp' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToTimestampTransformer($options['model_timezone'], $options['model_timezone'])
            ));
        } elseif ('array' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToArrayTransformer($options['model_timezone'], $options['model_timezone'], ['year', 'month', 'day'])
            ));
        }

        if (\in_array($options['input'], ['datetime', 'datetime_immutable'], true) && null !== $options['model_timezone']) {
            $builder->addEventListener(FormEvents::POST_SET_DATA, static function DFormEvent $event) use ($options): void {
                $date = $event->getData();

                

namespace Symfony\Component\Form\Tests\Extension\Core\DataTransformer;

use Symfony\Component\Form\Exception\TransformationFailedException;
use Symfony\Component\Form\Extension\Core\DataTransformer\BaseDateTimeTransformer;
use Symfony\Component\Form\Extension\Core\DataTransformer\DateTimeToTimestampTransformer;

class DateTimeToTimestampTransformerTest extends BaseDateTimeTransformerTestCase
{
    public function testTransform()
    {
        $transformer = new DateTimeToTimestampTransformer('UTC', 'UTC');

        $input = new \DateTime('2010-02-03 04:05:06 UTC');
        $output = $input->format('U');

        $this->assertEquals($output, $transformer->transform($input));
    }

    public function testTransformEmpty()
    {
        $transformer = new DateTimeToTimestampTransformer();

        

$builder->addViewTransformer(new DateTimeToArrayTransformer($options['model_timezone'], $options['view_timezone'], $parts, 'text' === $options['widget'], $options['reference_date']));
        }

        if ('datetime_immutable' === $options['input']) {
            $builder->addModelTransformer(new DateTimeImmutableToDateTimeTransformer());
        } elseif ('string' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToStringTransformer($options['model_timezone'], $options['model_timezone'], $options['input_format'])
            ));
        } elseif ('timestamp' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToTimestampTransformer($options['model_timezone'], $options['model_timezone'])
            ));
        } elseif ('array' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToArrayTransformer($options['model_timezone'], $options['model_timezone'], $parts, 'text' === $options['widget'], $options['reference_date'])
            ));
        }

        if (\in_array($options['input'], ['datetime', 'datetime_immutable'], true) && null !== $options['model_timezone']) {
            $builder->addEventListener(FormEvents::POST_SET_DATA, static function DFormEvent $event) use ($options): void {
                $date = $event->getData();