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# d104481a 04-Jan-2023 Alex Dowad

Correct entry for 0x80,0xFD-FF in SJIS multi-byte character length table

As a performance optimization, mbstring implements some functions using
tables which give the (byte) length of a

Correct entry for 0x80,0xFD-FF in SJIS multi-byte character length table

As a performance optimization, mbstring implements some functions using
tables which give the (byte) length of a multi-byte character using a
lookup based on the value of the first byte. These tables are called
`mblen_table`.

For many years, the mblen_table for SJIS has had '2' in position 0x80.
That is wrong; it should have been '1'. Reasons:

For SJIS, SJIS-2004, and mobile variants of SJIS, 0x80 has never been
treated as the first byte of a 2-byte character. It has always been
treated as a single erroneous byte. On the other hand, 0x80 is a valid
character in MacJapanese... but a 1-byte character, not a 2-byte one.

The same applies to bytes 0xFD-FF; these are 1-byte characters in
MacJapanese, and in other SJIS variants, they are not valid (as the
first byte of a character).

Thanks to the GitHub user 'youkidearitai' for finding this problem.

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Revision tags: php-8.1.7RC1, php-8.1.4RC1, php-8.1.3, php-8.1.2RC1, php-8.1.0, php-7.3.33, php-7.3.32, php-7.3.31, php-7.3.30, php-7.3.29
# 39131219 11-Jun-2021 Nikita Popov

Migrate more SKIPIF -> EXTENSIONS (#7139)

This is a mix of more automated and manual migration. It should remove all applicable extension_loaded() checks outside of skipif.inc files.

Revision tags: php-7.3.28
# b1177127 13-Feb-2021 Max Semenik

Remove stray mentions of mbstring.func_overload

This feature has been completely removed.

Closes GH-6688.

Revision tags: php-7.3.27, php-7.3.26, php-7.3.26RC1, php-7.3.25, php-7.3.25RC1, php-7.3.24, php-7.3.24RC1, php-7.3.23, php-7.3.23RC1, php-7.3.22, php-7.3.22RC1, php-7.3.21, php-7.3.21RC1, php-7.3.20, php-7.3.20RC1, php-7.3.19, php-7.4.7RC1, php-7.3.19RC1, php-7.3.18RC1, php-7.2.30, php-7.3.17, php-7.3.17RC1, php-7.3.18, php-7.3.16, php-7.3.16RC1, php-7.3.15RC1, php-7.3.15, php-7.3.14, php-7.3.14RC1, php-7.3.13, php-7.3.13RC1, php-7.2.26RC1, php-7.4.0, php-7.2.25, php-7.3.12, php-7.4.0RC6, php-7.3.12RC1, php-7.2.25RC1, php-7.4.0RC5, php-7.1.33, php-7.2.24, php-7.3.11, php-7.4.0RC4, php-7.3.11RC1, php-7.2.24RC1, php-7.4.0RC3, php-7.2.23, php-7.3.10, php-7.4.0RC2, php-7.2.23RC1, php-7.3.10RC1, php-7.4.0RC1, php-7.1.32, php-7.2.22, php-7.3.9, php-7.4.0beta4, php-7.2.22RC1, php-7.3.9RC1, php-7.4.0beta2, php-7.1.31, php-7.2.21, php-7.3.8, php-7.4.0beta1, php-7.2.21RC1, php-7.3.8RC1, php-7.4.0alpha3, php-7.3.7, php-7.2.20, php-7.4.0alpha2, php-7.3.7RC3, php-7.3.7RC2, php-7.2.20RC2, php-7.4.0alpha1, php-7.3.7RC1, php-7.2.20RC1, php-7.2.19, php-7.3.6, php-7.1.30, php-7.2.19RC1, php-7.3.6RC1, php-7.1.29, php-7.2.18, php-7.3.5, php-7.2.18RC1, php-7.3.5RC1, php-7.2.17, php-7.3.4, php-7.1.28, php-7.3.4RC1, php-7.2.17RC1, php-7.1.27, php-7.3.3, php-7.2.16, php-7.3.3RC1, php-7.2.16RC1
# d77ad274 09-Feb-2019 legale

Implement mb_str_split()

RFC: https://wiki.php.net/rfc/mb_str_split