$doc = new DOMDocument(); $doc->load('xmlfile.xml'); // Set the schema to validate against $doc->schemaValidate('schema.xsd');
$doc = new DOMDocument(); $doc->load('xmlfile.xml'); // Set the DTD to validate against $doc->validate(); // Check for errors if ($doc->validate()) { echo "XML document is valid."; } else { echo "XML document is not valid."; }This code loads an XML file and validates it against a DTD file (if one is specified in the XML file). It then checks for errors and outputs a message indicating whether the document is valid or not. Package libraries that may include the PHP DOMDocument class and its validate function include: - The PHP core library: https://www.php.net/manual/en/class.domdocument.php - The Symfony DomCrawler component: https://symfony.com/doc/current/components/dom_crawler.html - The Zend Framework XML component: https://docs.zendframework.com/zend-xml/escaping-xml/