Doctrine DateTimeType supporting MySQL fractional seconds

bootstrap.php

<?php

// add this line somewhere in the bootstrap
\Doctrine\DBAL\Types\Type::overrideType('datetime', 'My\Project\DBAL\Types\DateTimeType');

DateTimeType.php

<?php
/**
 * A custom type type for datetime(3) in MySQL.
 *
 * @see http://www.doctrine-project.org/jira/browse/DBAL-1084
 */
namespace My\Project\DBAL\Types;

use Doctrine\DBAL\Types\ConversionException;
use Doctrine\DBAL\Platforms\AbstractPlatform;

class DateTimeType extends \Doctrine\DBAL\Types\DateTimeType
{
    /**
     * {@inheritdoc}
     */
    public function convertToDatabaseValue($value, AbstractPlatform $platform)
    {
        if ($value === null) {
            return null;
        }

        $format = $platform->getDateTimeFormatString();
        if ((int) $value->format('u') === 0) {
            $format .= '.u';
        }
        return $value->format($format);
    }

    /**
     * {@inheritdoc}
     */
    public function convertToPHPValue($value, AbstractPlatform $platform)
    {
        if ($value === null || $value instanceof \DateTime) {
            return $value;
        }

        $format = $platform->getDateTimeFormatString();
        if (preg_match('/.+\.\d+$/', $value)) {
            $format .= '.u';
        }

        $val = \DateTime::createFromFormat($format, $value);
        if (!$val) {
            throw ConversionException::conversionFailedFormat($value, $this->getName(), $platform->getDateTimeFormatString() . '.u');
        }

        return $val;
    }
}