This directory contains the listing of HTML5 named character references and a script that can be used to create or update the optimized form for use in the HTML API.

The HTML5 specification asserts:

This list is static and will not be expanded or changed in the future.

• https://html.spec.whatwg.org/#named-character-references

The authoritative entities.json file comes from the WHATWG server, and is cached here in the test directory so that it doesn't need to be constantly re-downloaded.

The html5-named-character-references.php file contains an optimized lookup map for the entities in entities.json. Run the generate-html5-named-character-references.php file to update the auto-generated Core module.

~$ php tests/phpunit/data/html5-entities/generate-html5-named-character-references.php
OK: Successfully generated optimized lookup class.