Can I include PHP in an XML file?

问题

I am trying to create an automatic "sitemap.xml", I already followed the instructions provided by Google to create one, and here is what I currently have:

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

    <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">

        <url><loc>http://www.example.com/</loc></url> 

    </urlset>

Now, I wanted to replace "<url><loc>http://www.example.com/</loc></url>" with "<?php include ("assets/includes/menu.inc"); ?>" which will include the following:

<li><a href="index.php">Home</a></li>
<li class="subMenu"><a href="gallery.php">Gallery</a>
    <ul>
        <li><a href="404.php">404 Error Page</a></li>
        <li><a href="about.php">About</a></li>
    </ul>
</li>
<li><a href="contact.php">Contact</a></li>

However, I just realized that PHP include won't work on XML files, so is there anyway to include that php on there?

What am I thinking of? I am trying to make my sitemap to be generated/updated automatically, so I want to include my menu "main links" to the XML and then use CSS "before & after selectors" to add the tags <url><loc> before every <a></a> and </url></loc> after, creating: <url><loc>http://www.example.com/</loc></url> which is what the sitemap is essentially built of.

Any ideas of how I can make this work?

回答1:

I, personally have never used include when creating a site map but I wouldn't see it as a problem as long as you are using valid xml elements.

You can create your xml using some of the php classes for it and just defining your content type like: header ("Content-type: text/xml; charset=UTF-8"); and from there you can instantiate your xml classes if you chose or do it all by hand

回答2:

The answer to your question is: yes, you can embedded PHP in XML. PHP is specifically designed to be embedded: that's why <?php...?> tags exist in the first place. And PHP doesn't know or care where you embed it as long as:

• The file is sent to the PHP interpreter.
• There's nothing in the host document that inadvertently looks like a PHP start tag.

Such answer is basically irrelevant given what you want to do. Google sitemaps are XML files with a very specific syntax. Injecting the HTML code of your main menu will not make a sitemap out of it, just like opening a MP3 file in your text editor and typing your name in the middle of it will not make Freddy Mercury sing it.

来源：https://stackoverflow.com/questions/21446337/can-i-include-php-in-an-xml-file