Validates the document based on its DTD.
You can also use the validateOnParse property of DOMDocument to make a DTD validation.
Retorna TRUE em caso de sucesso ou FALSE em falhas. If the document have no DTD attached, this method will return FALSE.
Exemplo 1. Example of DTD validation
<?php$dom = new DOMDocument;$dom->Load('book.xml');if ($dom->validate()) { echo "This document is valid!\n"; }?>
You can also validate your XML file while loading it:
<?php$dom = new DOMDocument;$dom->validateOnParse = true;$dom->Load('book.xml');?>