PHP 通过DOM方式创建一个book.xml文件

<?php
$doc=new DOMDocument('1.0','utf-8');
$bookshelf=$doc->createElement('bookshelf');
$doc->appendChild($bookshelf);
$book=$doc->createElement('book');
$title=$doc->createElement('title');
$title->nodeValue='PHP';
$book->appendChild($title);
$bookshelf->appendChild($book);
$doc->formatOutput=true;
$doc->save('createbook.xml');
?>