DOMDocument::validate

(PHP 5, PHP 7, PHP 8)

DOMDocument::validate Validates the document based on its DTD

Description

public DOMDocument::validate(): bool

Validates the document based on its DTD.

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

Parameters

This function has no parameters.

Return Values

Returns true on success or false on failure. If the document has no DTD attached, this method will return false.

Examples

Example #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');
?>

See Also