Solution that php output xml must header

In this paper, an example is given to describe the solution that php must output xml to header. Share it for your reference. The specific methods are as follows:

Problem description:

Recently, when doing an xml output, we found that the xml document that we directly use echo input will prompt Error: Object # has no method 'load' error, and then we changed to header () output xml header file to solve it. Record 1 below.

Solution:

Because the xml and txt files are too long and similar, so I am mixed up with txt.

Let's take a look at the following code:

echo '<?xml version="1.0" encoding="UTF-8"?>

<sitemap>

<loc>https://www.ofstack.com/</loc>

<lastmod>2013-01-22T11:00:18+08:00</lastmod>

</sitemap>

';

exit;

Is such a piece of code, xml output alive and dead can not pass xml verification.
Error Prompt Error: Object # has no method 'load'
Finally, I checked the file 1 directly placed in 1. xml for half a day
The specific code is as follows

<?xml version="1.0" encoding="UTF-8"?>

<sitemap>

<loc>https://www.ofstack.com/</loc>

<lastmod>2013-01-22T11:00:18+08:00</lastmod>

</sitemap>

Just add an header. For hours. . . . .
The specific code is as follows

<?php

header("Content-type:text/xml");

echo '<?xml version="1.0" encoding="UTF-8"?>

<sitemap>

<loc>https://www.ofstack.com/</loc>

<lastmod>2013-01-22T11:00:18+08:00</lastmod>

</sitemap>

';

exit;

I hope this article is helpful to everyone's php programming.