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Date: Tue, 26 Mar 2024 17:15:25 +0000
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Subject: =?US-ASCII?Q?Re=3A_=5BPHP-DEV=5D=5BRFC=5D_grapheme_cluster_for?=
 =?US-ASCII?Q?_str=5Fsplit=2C_grapheme=5Fstr=5Fsplit_function?=
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From: derick@php.net (Derick Rethans)

On 26 March 2024 17:04:18 GMT, Casper Langemeijer <langemeijer@php=2Enet> w=
rote:
>I'd like to address an issue I have with this RFC=2E

Please don't top reply=2E=20

>I'm not sure is solves a problem by itself=2E If I understand all of this=
 correctly this only does what already can be accomplished with preg_match_=
all('/\X/u', =2E=2E=2E)=2E The result of this method in my opinion is not v=
ery usefull by itself=2E I've done some searching on various code platforms=
 where I mostly find the use-case for counting the number of grapheme's=2E =
I've used it to implement strrev() that correctly works multibyte=2E=20
>
>I'm very sad that mbstring works on codepoints instead of grapheme's and =
I would very much like to see something happening in that area, but I think=
 expanding a simple string to an array of as many elements to give develope=
rs a tool to do this in PHP-space is not good enough=2E Especially since it=
 can already be achieved with a regexp that already works=2E
>
>In my opinion: This adds nothing, and tells the PHP developer that is ok =
to do count(grapheme_str_split()) for a more accurate mb_strlen()=2E
>
>I would like to see a family of functions that can do multibyte str_split=
(), strrev(), substr()=2E Ideally as bugfix in mb_* functions, because the =
edge-case of wanting to know the length in codepoints of a string is a weir=
d edge-case=2E No developer wants to know that=2E mb_strlen() should have r=
eturned the number of graphemes from the start=2E

Many of these already exist, such as grapheme_substr=2E We can't simply ch=
ange the behaviour of the already existing functions due to BC reasons=2E=
=20

The intl extension is also built on ICU, an actual unicode text processing=
 library=2E=20

The grapheme_str_split function, as well as other intl extension functions=
 is what should replace mbstring really=2E=20

cheers=20
Derick=20