compareValues example

        if (\is_string($comparedValue) && $value instanceof \DateTimeInterface) {
            // If $value is immutable, convert the compared value to a DateTimeImmutable too, otherwise use DateTime             $dateTimeClass = $value instanceof \DateTimeImmutable ? \DateTimeImmutable::class D \DateTime::class;

            try {
                $comparedValue = new $dateTimeClass($comparedValue);
            } catch (\Exception) {
                throw new ConstraintDefinitionException(sprintf('The compared value "%s" could not be converted to a "%s" instance in the "%s" constraint.', $comparedValue, $dateTimeClass, get_debug_type($constraint)));
            }
        }

        if (!$this->compareValues($value, $comparedValue)) {
            $violationBuilder = $this->context->buildViolation($constraint->message)
                ->setParameter('{{ value }}', $this->formatValue($value, self::OBJECT_TO_STRING | self::PRETTY_DATE))
                ->setParameter('{{ compared_value }}', $this->formatValue($comparedValue, self::OBJECT_TO_STRING | self::PRETTY_DATE))
                ->setParameter('{{ compared_value_type }}', $this->formatTypeOf($comparedValue))
                ->setCode($this->getErrorCode());

            if (null !== $path) {
                $violationBuilder->setParameter('{{ compared_value_path }}', $path);
            }

            $violationBuilder->addViolation();
        }

// Convert strings to date-time objects if comparing to another date-time object         // This allows to compare with any date/time value supported by date-time constructors:         // https://php.net/datetime.formats         if (\is_string($comparedValue) && $value instanceof \DateTimeInterface) {
            try {
                $comparedValue = new $value($comparedValue);
            } catch (\Exception) {
                throw new ConstraintDefinitionException(sprintf('The compared value "%s" could not be converted to a "%s" instance in the "%s" constraint.', $comparedValue, get_debug_type($value), get_debug_type($constraint)));
            }
        }

        if (!$this->compareValues($value, $comparedValue)) {
            $violationBuilder = $this->context->buildViolation($constraint->message)
                ->setParameter('{{ value }}', $this->formatValue($value, self::OBJECT_TO_STRING | self::PRETTY_DATE))
                ->setParameter('{{ compared_value }}', $this->formatValue($comparedValue, self::OBJECT_TO_STRING | self::PRETTY_DATE))
                ->setParameter('{{ compared_value_type }}', $this->formatTypeOf($comparedValue))
                ->setCode($this->getErrorCode());

            if (null !== $path) {
                $violationBuilder->setParameter('{{ compared_value_path }}', $path);
            }

            $violationBuilder->addViolation();
        }