To be coherent with the section attribute what about this?

<entry title="Air Max 90">
    One of the more icon color is the infrared.
</entry>

One of the issue with creating XML by hand we don't handle special cases.

Imagine a entry with this text:

In a report, section are closed by </section>. This tag allows to mark the end of the entries.

With your code, that would be written as is.

With a library to write XML, some strategies would allow the content to be safe:

• the library could use CDATA - https://en.wikipedia.org/wiki/CDATA
• the characters could be escaped

PHP offers directly such capabilities, for example https://www.php.net/manual/en/example.xmlwriter-simple.php