src/Viserio/Component/Parser/Utils/XmlUtils.php
private static function validateXmlDom(DOMDocument $dom, $schemaOrCallable): void
    {
        $internalErrors = \libxml_use_internal_errors(true);
        \libxml_clear_errors();

        $exception = null;

        if (\is_callable($schemaOrCallable)) {
            try {
                /** @var callable $schemaOrCallable */
                $valid = $schemaOrCallable($dom, $internalErrors);
            } catch (Throwable $exception) {
                $valid = false;
            }
        } elseif (\is_string($schemaOrCallable) && \is_file($schemaOrCallable)) {
            $valid = @$dom->schemaValidateSource(\file_get_contents($schemaOrCallable));
        } else {
            \libxml_use_internal_errors($internalErrors);

            throw new InvalidArgumentException('The schemaOrCallable argument has to be a valid path to XSD file or callable.');
        }

        if (! $valid) {
            $errors = self::getErrorsAsString(self::getXmlErrors($internalErrors));

            if ($errors === '') {
                $errors = 'The XML file is not valid.';
            }

            throw new InvalidArgumentException($errors, 0, $exception);
        }
    }
private static function validateXmlDom(DOMDocument $dom, $schemaOrCallable): void
    {
        $internalErrors = \libxml_use_internal_errors(true);
        \libxml_clear_errors();

        $exception = null;

        if (\is_callable($schemaOrCallable)) {
            try {
                /** @var callable $schemaOrCallable */
                $valid = $schemaOrCallable($dom, $internalErrors);
            } catch (Throwable $exception) {
                $valid = false;
            }
        } elseif (\is_string($schemaOrCallable) && \is_file($schemaOrCallable)) {
            $valid = @$dom->schemaValidateSource(\file_get_contents($schemaOrCallable));
        } else {
            \libxml_use_internal_errors($internalErrors);

            throw new InvalidArgumentException('The schemaOrCallable argument has to be a valid path to XSD file or callable.');
        }

        if (! $valid) {
            $errors = self::getErrorsAsString(self::getXmlErrors($internalErrors));

            if ($errors === '') {
                $errors = 'The XML file is not valid.';
            }

            throw new InvalidArgumentException($errors, 0, $exception);
        }
    }
Validates DOMDocument against a file or callback.

@param \DOMDocument    $dom
@param callable|string $schemaOrCallable

@throws \Viserio\Component\Contract\Parser\Exception\InvalidArgumentException

@return void