Exclude PHP polyfill functions from code reference.

[dd32]

wp-includes/compat.php contains a number of PHP functions which may be 'missing' from installations, due to either being introduced in a later PHP version or being dependant upon extensions.

The following functions are @ignore'd which prevents them showing up on ​https://developer.wordpress.org/reference/files/wp-includes/compat.php/

• mb_substr()
• mb_strlen()
• hash_hmac()
• prefixed private variants of those functions

The following functions have compat methods defined, but do not include @ignore and appear on the above page as a result:

• hash_equals()
• is_countable()
• is_iterable()
• array_key_first()
• array_key_last()
• str_contains()
• str_starts_with()
• str_ends_with()
• _() (single underscore, used by some external libraries)

Aside from the last one, _(), I don't see any reason for these to be included in the WordPress documentation reference.

These functions were added in WordPress 3.9.2, 4.9.6, and 5.9.0.

[dd32]

It did occur to me that we could probably just also exclude _() and ignore the entire file in the developer docs parser instead.

[mukesh27]

55799.diff​ look good to skipped when parsing.

Moving this ticket to the milestone for visibility.

[SergeyBiryukov]

Replying to dd32:

It did occur to me that we could probably just also exclude _() and ignore the entire file in the developer docs parser instead.

Makes sense to me, I went that route in ​[meta11956].

After deleting the previously imported entries and re-running the parser, these polyfill functions no longer show up in the Code Reference.