tags - PHP matching tags regular expression

Requirements:
1. Tags can contain double-character bytes (including Chinese), numbers, letters, underscores, and dashes. Each tag can have a maximum of 12 characters;
2. Tags are separated by English commas, with a maximum of 5 tags.

<code>/^([\x00-\xffA-Za-z0-9_]+)(,[\x00-\xffA-Za-z0-9_]+){0,4}$/u</code>

This is not correct, please write it correctly.

Reply content:

Requirements:
1. Tags can contain double-character bytes (including Chinese), numbers, letters, underscores, and dashes. Each tag can have a maximum of 12 characters;
2. Tags are separated by English commas, with a maximum of 5 tags.

<code>/^([\x00-\xffA-Za-z0-9_]+)(,[\x00-\xffA-Za-z0-9_]+){0,4}$/u</code>

This is not correct, please write it correctly.