XMLReader::isValid

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

XMLReader::isValid — Indicates if the parsed document is valid

说明

public XMLReader::isValid(): bool

Returns a boolean indicating if the document being parsed is currently valid according to the DTD, or an XML or RelaxNG schema. If there is no schema, and the DTD validation option is not provided, this method will return false.

参数

此函数没有参数。

返回值

Returns true when the document is valid or false otherwise.

示例

示例 #1 Validating XML

<?php
$xml = XMLReader::open('examples/book-simple.xml');

// The validate parser option must be enabled for
// this method to work properly
$xml->setParserProperty(XMLReader::VALIDATE, true);

var_dump($xml->isValid());
?>

注释

注意: This checks the current node, not the entire document.

参见