On Dec 7, 2007 9:51 AM, Nathan Rixham <[EMAIL PROTECTED]> 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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