BC Math 函数
PHP 手册

bcmul

(PHP 4, PHP 5)

bcmulMultiply two arbitrary precision number

说明

string bcmul ( string $left_operand , string $right_operand [, int $scale ] )

Multiply the left_operand by the right_operand .

参数

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().

返回值

Returns the result as a string.

范例

Example #1 bcmul() example

<?php
echo bcmul('1.34747474747''35'3); // 47.161
echo bcmul('2''4'); // 8
?>

参见


BC Math 函数
PHP 手册