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
- DOMDocument::schemaValidate() - Validates a document based on a schema. Only XML Schema 1.0 is supported.
- DOMDocument::schemaValidateSource() - Validates a document based on a schema
- DOMDocument::relaxNGValidate() - Performs relaxNG validation on the document
- DOMDocument::relaxNGValidateSource() - Performs relaxNG validation on the document
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