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Date: Tue, 6 Mar 2012 17:05:02 -0500
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Subject: Re: [PHP-DEV] [RFC] Config setting to force all math operations to
 pass through BCMath library.
From: dmgx.michael@gmail.com (Michael Morris)

On Tue, Mar 6, 2012 at 4:47 PM, Tomas Kuliavas
<tokul@users.sourceforge.net> wrote:
> 2012.03.06 23:03 Michael Morris ra=C5=A1=C4=97:
>> https://wiki.php.net/rfc/php_ini_bcmath_default
>>
>> This is the only other RFC I've been rummaging around in my head but
>> hadn't brought up.
>
> PHP has something similar with mbstring function overloading. If people
> use both string and mbstring functions, they can no longer trust string
> functions. mbstring function overloading makes string functions
> unreliable. Functions, that are not charset aware by default, can start
> operating in different charset with a single flip in interpreter config.
> First you start cursing, then you have to implement workarounds to deal
> with features designed for people, who want to use different functions
> without changing a single line in their code. You are asking to do same
> thing in math functions.

No, I am not.  This RFC involves the operators, not the functions.
Addition, division, multiplication, subtraction.  The PHP math
functions will behave as they always have.

>
> If you want to use bcmath, use bcmath in your code.

I do use it.  It's a pain in the ass to read because you have to LISP
nest all the operations.  You can't tell me this is easy or intuitive
to read...

bcadd( bcsub( $bill['penalty'], $bill['rounding'], 2),bcmul(
$bill['taxdue'], bcmul( $penalty, $monthsAhead, 2 ), 2 ), 2 )

Compared to

$bill['penalty'] - $bill['rounding'] + $bill['taxdue'] * $penalty *
$monthsAhead;

You can do it, but it's eye bleeding.