bcmod
Except that with xpheas method, you lose all the benefits of arbitrary precision as the * operator only works on int and float and those are restricted in length (See int ant float types for more information).
bcmul
(PHP 4, PHP 5)
bcmul — Multiply two arbitrary precision number
Описание
string bcmul
( string $left_operand
, string $right_operand
[, int $scale
] )
Multiply the left_operand by the right_operand .
Список параметров
- left_operand
-
The left operand, as a string.
- right_operand
-
The right operand, as a string.
- scale
-
This optional parameter is used to set the number of digits after the decimal place in the result. You can also set the global default scale for all functions by using bcscale().
Возвращаемые значения
Returns the result as a string.
Примеры
Пример #1 bcmul() example
<?php
echo bcmul('1.34747474747', '35', 3); // 47.161
echo bcmul('2', '4'); // 8
?>
add a note
User Contributed Notesbcmul
ju(...)
02-Apr-2008 10:00
02-Apr-2008 10:00
xpheas (at) gmail . com
14-Jun-2007 05:13
14-Jun-2007 05:13
if you have compiled php width "--disable-bcmath", you can use this:
<?php
function bcmul($_ro, $_lo, $_scale=0)
{
return round($_ro*$_lo, $_scale);
}
?>