DOMDocument::validate

(PHP 5, PHP 7, PHP 8)

DOMDocument::validate — Validates the document based on its DTD

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.

此函数没有参数。

成功时返回 true，或者在失败时返回 false。 If the document has no DTD attached, this method will return false.

示例 #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');
?>

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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