Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:111808
To: internals@lists.php.net
References: <89FF9360-609A-439F-BDBE-B3B4C141E00F@newclarity.net>
 <CAF+90c8A7oWmM45poXj2goghCa00Jz3fiU7ud-aZgVwCfgXOzQ@mail.gmail.com>
 <20200903095840.4b83640d@mcmic-probook.opensides.be>
Message-ID: <d5ed0ed1-40a6-f803-2260-ad984e42745d@fischer.name>
Date: Thu, 3 Sep 2020 11:18:50 +0200
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0)
 Gecko/20100101 Thunderbird/68.12.0
MIME-Version: 1.0
In-Reply-To: <20200903095840.4b83640d@mcmic-probook.opensides.be>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 8bit
X-Spam_score: -5.3
X-Spam_score_int: -52
X-Spam_bar: -----
X-Spam_report: Spam detection software, running on the system "scanner01.home", has
 identified this incoming email as possible spam.  The original message
 has been attached to this so you can view it (if it isn't spam) or label
 similar future email.  If you have any questions, see
 the administrator of that system for details.
 
 Content preview:  Hi, On 03.09.20 09:58, Côme Chilliet wrote: >> >> foreach
    ($iterable as $key => $_) { ... } > > I currently use foreach (array_keys($array)
    as $key) { ... } > to avoid complains from code analysers on unused var,
   is it slower? [...] 
 
 Content analysis details:   (-5.3 points, 5.0 required)
 
  pts rule name              description
 ---- ---------------------- --------------------------------------------------
 -1.0 ALL_TRUSTED            Passed through trusted hosts only via SMTP
 -1.9 BAYES_00               BODY: Bayes spam probability is 0 to 1%
                             [score: 0.0000]
 -2.4 NICE_REPLY_A           Looks like a legit reply (A)
X-CMAE-Envelope: MS4wfBVgSS7qJgEcpux+5BsuAnjGKdNYml543fMHDtebiGtIAWFvsy66vZ8YA29SjrlavvZnDdJUVlUlK0F24c/3TGdF+1qySP533YAZkpYPiDkDLkxRmWrx
 s/hX9kDtwSVp4i0ITAPsDulOTvQuRH7H5TXoQ3pHmNO65Q7EBJ+SrQWE
Subject: Re: [PHP-DEV] Draft RFC: foreach iteration of keys without values
From: markus@fischer.name (Markus Fischer)

Hi,

On 03.09.20 09:58, Côme Chilliet wrote:
>>
>>      foreach ($iterable as $key => $_) { ... }
> 
> I currently use foreach (array_keys($array) as $key) { ... }
>   to avoid complains from code analysers on unused var, is it slower?

one argument brought forward initially (sorry, can't find the email 
right now) is the resource management: array_keys() has to create a copy 
[*] which might be an issue depending on the size of data.

- Markus

[*] I now about shallow-copy, I'm just trying to cite the initial 
argument as best as I can :)