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Date: Sat, 22 Jun 2019 23:27:43 +0300
Message-ID: <CA+hqhpfVG_yD-NkM5FYtrZgmb1ZZiNX0QTeVbsqsEk69L0=tpQ@mail.gmail.com>
To: Nikita Popov <nikita.ppv@gmail.com>
Cc: will@wkhudgins.info, PHP internals <internals@lists.php.net>
Content-Type: text/plain; charset="UTF-8"
Subject: Re: [PHP-DEV] [RFC] Desire to move RFC add_str_begin_and_end_functions
 to a vote
From: weirdan@gmail.com (Bruce Weirdan)

On Sat, Jun 22, 2019 at 6:32 PM Nikita Popov <nikita.ppv@gmail.com> wrote:
>
> The normal str_starts_with() function is perfectly  safe to use on UTF-8 strings,

Only if you assume strings to be normalized to the same form. Checking if NFC
string starts with NFD substring by checking them bit by bit is going
to yield false
negatives [1]

[1] https://3v4l.org/4HgUL


-- 
  Best regards,
      Bruce Weirdan                                     mailto:weirdan@gmail.com