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# DOMDocument->validate()

DOMDocument->validate() -- Validates the document based on its DTD

## Description

class DOMDocument {
bool validate ( void )
}

Validates the document based on its DTD.

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

## Return values

Palauttaa `TRUE` onnistuessaan, muutoin `FALSE`. If the document have no DTD attached, this method will return `FALSE`.

## Examples

Esimerkki 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

DOMDocument->schemaValidate()
DOMDocument->schemaValidateSource()
DOMDocument->relaxNGValidate()
DOMDocument->relaxNGValidateSource()

Edellinen | Alkuun | Seuraava
DOMDocument->schemaValidateSource() | Ylös | DOMDocument->xinclude()