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Date: Fri, 7 Dec 2007 10:37:49 -0500
To: nrixham@gmail.com
Cc: internals@lists.php.net
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References: <01.E6.00959.D3E59574@pb1.pair.com>
Subject: Re: [PHP-DEV] Thoughts on Feature Request - Arithmetic
From: parasane@gmail.com ("Daniel Brown")

On Dec 7, 2007 9:51 AM, Nathan Rixham <nrixham@gmail.com> wrote:
> In-Built PHP Functions for parsing of basic arithmetic and if possible
> fraction to decimal and decimal to fraction

    PHP already handles half of what you're looking for by default.

> $arithmetic_string = "3*5";
> echo arith($arithmetic_string); // returns float 15

    <?=3 * 5;?>

> $arithmetic_string = "1/2";
> echo arith($arithmetic_string); // returns float 0.5

    <?=1 / 2;?>

> $fraction_string = "1/4";
> echo fracdec($fraction_string); // returns float 0.25

    <?=1 / 4; ?>

> $dec_string = "0.5";
> echo decfrac($dec_string); // returns string "1/4"

    Now I see why you need PHP to do your math for you!  ;-P

    There are functions written that do this now though.

> I've used php for years, came accross the need for this today and was
> suprised such a basic command wasn't there.. currently the only way I
> can see to do it would be to eval.. which isn't the most secure method
> for such a basic need.
>
> Regards
>
> Nathan
>
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> PHP Internals - PHP Runtime Development Mailing List
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>



-- 
Daniel P. Brown
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If at first you don't succeed, stick to what you know best so that you
can make enough money to pay someone else to do it for you.