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To: PHP internals <internals@lists.php.net>
Thread-Topic: [PHP-DEV] Array spread append
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Subject: Re: [PHP-DEV] Array spread append
From: vorismi3@fjfi.cvut.cz ("Vorisek, Michael")
--_000_GVXPR06MB897288CBFAC593381988D107B2919GVXPR06MB8972eurp_
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The goal is fast multi-item array append, which is currently not possible, =
as `+=3D` and `array_push` operators does something else and `array_merge` =
is very slow as the whole array is copied.
Currently the fastest approach is to use the foreach equivalent, which requ=
ires much more code and two intermediate variables for k/v.
For better understanding, I have updated the example codes in https://githu=
b.com/php/php-src/issues/10791 but sadly all short codes are slow as array =
is copied.
Michael
________________________________
From: Micha=B3 Marcin Brzuchalski <michal.brzuchalski@gmail.com>
Sent: Thursday, April 6, 2023 5:01 PM
To: Vorisek, Michael <vorismi3@fjfi.cvut.cz>
Cc: PHP internals <internals@lists.php.net>
Subject: Re: [PHP-DEV] Array spread append
czw., 6 kwi 2023, 13:53 u=BFytkownik Vorisek, Michael <vorismi3@fjfi.cvut.c=
z<mailto:vorismi3@fjfi.cvut.cz>> napisa=B3:
Hi Ilija,
* Are integer keys preserved? I'm assuming no, as otherwise it would
be the same as `$a + $b`.
$arr[...] =3D $arr;
should be the same as
foreach ($arr as $v) { $arr[] =3D $v; }
I'd argue with that because I think the spread operator should be consisten=
t with preserve keys strategy used in other places.
Cheers,
Micha=B3 Marcin Brzuchalski
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