tags-php matching tag Regular expression

Requirements:
1. Tags can contain double-character bytes (including Chinese), numbers, letters, underscores, and bars, with a maximum of 12 characters per label;
2. The tags are separated by commas, with a maximum of 5 tags.

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

This is not correct, please correct the wording.

Reply content:

Requirements:
1. Tags can contain double-character bytes (including Chinese), numbers, letters, underscores, and bars, with a maximum of 12 characters per label;
2. The tags are separated by commas, with a maximum of 5 tags.

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

This is not correct, please correct the wording.

