PHP写XML文件

不正狼

<?php
$domain = "DOMAIN";
$username = "USERNAME";
$owner = "OWNER" ;
$template = "TEMPLATE" ;
$description = "DESCRIPTION" ;
$topics = "TOPICS" ;
$subject  = "SUBJECT" ;
$xmlstr = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n
<batchcommands>\n
\n</batchcommands>";
$xml = new SimpleXMLElement($xmlstr);
$create = $xml->addchild('create');
$mailing_list = $create->addchild('mailing_list');
$mailing_list->addAttribute('domain', ($domain));
$mailing_list->addAttribute('username', ($username));
$mailing_list->addChild('owner', $owner);
$mailing_list->addChild('template', $template);
$mailing_list->addChild('description', $description);
$mailing_list->addChild('topics', $topics);
$mailing_list->addChild('subject', $subject);
$xml->asXML("C:/create.xml");
?>


生成文件内容：

<?xml version="1.0" encoding="UTF-8"?>
<batchcommands>
<create>
<mailing_list domain="DOMAIN" username="USERNAME">
<owner>OWNER</owner>
<template>TEMPLATE</template>
<description>DESCRIPTION</description>
<topics>TOPICS</topics>
<subject>SUBJECT</subject>
</mailing_list>
</create>
</batchcommands>