getting fraction from decimal number

[Bacci]

This isn't necessarily a php-specific question, but I'm looking for a
formula to determine the fraction portion of a decimal number. For instance,
8.25. I could simply search the number (as a string) and return everything
from the right of the decimal point (.25). However is there a formula to do
this more eloquently?

Thanks in advance.

[Pedro Graca]

Re: getting fraction from decimal number

Bacci wrote:[color=blue]
> This isn't necessarily a php-specific question, but I'm looking for a
> formula to determine the fraction portion of a decimal number. For instance,
> 8.25. I could simply search the number (as a string) and return everything
> from the right of the decimal point (.25). However is there a formula to do
> this more eloquently?[/color]

Maybe

<?php
$x = 8.25;
$y = $x - (int)$x; // $y now has 0.25
?>
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[FLEB]

Re: getting fraction from decimal number

Regarding this well-known quote, often attributed to Pedro Graca's famous
"8 Feb 2004 12:20:43 GMT" speech:
[color=blue]
> Bacci wrote:[color=green]
>> This isn't necessarily a php-specific question, but I'm looking for a
>> formula to determine the fraction portion of a decimal number. For instance,
>> 8.25. I could simply search the number (as a string) and return everything
>> from the right of the decimal point (.25). However is there a formula to do
>> this more eloquently?[/color]
>
> Maybe
>
> <?php
> $x = 8.25;
> $y = $x - (int)$x; // $y now has 0.25
> ?>[/color]

I'd recommend using:
$y = $x - floor($x);
to be sure of the rounding method.

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