DOMDocument::getElementsByTagName

(PHP 5, PHP 7, PHP 8)

DOMDocument::getElementsByTagNameSearches 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.

范例

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->nodeValuePHP_EOL;
}
?>

以上例程会输出:

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

参见