DOMDocument::getElementsByTagName

(PHP 5, PHP 7, PHP 8)

DOMDocument::getElementsByTagName — Searches for all elements with given local tag name

说明

public DOMDocument::getElementsByTagName(string $qualifiedName): DOMNodeList

This function returns a new instance of class DOMNodeList containing all the elements with a given local tag name.

参数

qualifiedName

The local name (without namespace) of the tag to match on. The special value * matches all tags.

返回值

A new DOMNodeList object containing all the matched elements.

示例

示例 #1 Basic Usage Example

<?php
$xml = <<< XML
<?xml version="1.0" encoding="utf-8"?>
<books>
<book>Patterns of Enterprise Application Architecture</book>
<book>Design Patterns: Elements of Reusable Software Design</book>
<book>Clean Code</book>
</books>
XML;

$dom = new DOMDocument;
$dom->loadXML($xml);
$books = $dom->getElementsByTagName('book');
foreach ($books as $book) {
echo $book->nodeValue, PHP_EOL;
}
?>

以上示例会输出：

Patterns of Enterprise Application Architecture
Design Patterns: Elements of Reusable Software Design
Clean Code

参见