DOMDocument::validate

PHP function Edit on GitHub ✎

(PHP 5, PHP 7, PHP 8)

Validates the document based on its DTD

Description

DOMDocument::validate(): bool

Validates the document based on its DTD.

You can also use the validateOnParse property of DOMDocument to make a DTD validation.

Success If the document has no DTD attached, this method will return false.

Example of DTD validation

php

<?php
$dom = new DOMDocument;
$dom->load('examples/book.xml');
if ($dom->validate()) {
    echo "This document is valid!\n";
}
?>

You can also validate your XML file while loading it:

php

<?php
$dom = new DOMDocument;
$dom->validateOnParse = true;
$dom->load('examples/book.xml');
?>