Description:
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About your Data Filters
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First the validation filters.
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You defined: FILTER_VALIDATE_EMAIL, FILTER_VALIDATE_IP and FILTER_VALIDATE_URL.

I request adding: FILTER_VALIDATE_MAC for MAC addresses, considering  
(1) the six groups of two hexadecimal digits, separated by hyphens (-) or colons (:) format, and (2) three groups of four hexadecimal digits separated by dots (.) format. Of course, not forgetting the default of twelve hexadecimal digits.

Next the sanitizing filters.
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I request adding: FILTER_SANITIZE_MAC for MAC addresses, which would remove all characters except hexadecimal digits.


Reproduce code:
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From manual page: filter.filters.validate
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