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Date: Sat, 24 Sep 2016 12:49:23 +0100
To: "internals@lists.php.net" <internals@lists.php.net>
Message-ID: <3D8739E3-0FB9-4757-B324-BE434750903C@gmail.com>
Subject: Re: [PHP-DEV] RFC: Strict comparisons
From: rowan.collins@gmail.com (Rowan Collins)

On 23 September 2016 23:14:37 BST, Dan Ackroyd <danack@basereality.com> wrote:
>On 23 September 2016 at 17:40, Rowan Collins <rowan.collins@gmail.com>
>wrote:
>>
>> I've been pondering an idea for ages of a generalised syntax for
>switch to
>> specify an operator to use, so you'd do something like this:
>
>That's technically possible already:
>
>function foobar($foo)
>{
>    switch (true) {
>        case $foo === '1':

Yeah, switch(true) has always felt like an ugly hack to me. If I ever do write up my idea I'll cover this in the RFC, but the main problem is that you have to repeat the "$foo ===" part in every case, which means a reader can't assume all the cases are of the same form, and in many situations you're better off just using elseifs.

A switch(true) makes more sense if you have a bunch of basically unrelated conditions with the same outcome, at which point a bunch of case labels is possibly easier to maintain than a big chain of boolean ors. 

Regards,

-- 
Rowan Collins
[IMSoP]