(PHP 4, PHP 5, PHP 7)
bcmul — Multiply two arbitrary precision numbers
bcmul ( string $num1 , string $num2 [, int|null $scale = null ] ) : string
Multiply the num1 by the num2.
num1
The left operand, as a string.
num2
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. If omitted, it will default to the scale set globally with the bcscale() function, or fallback to 0 if this has not been set.
Returns the result as a string.
| Version | Description |
|---|---|
| 8.0.0 | scale is now nullable. |
| 7.3.0 | bcmul() now returns numbers with the requested scale. Formerly, the returned numbers may have omitted trailing decimal zeroes. |
Note:
Before PHP 7.3.0 bcmul() may return a result with fewer digits after the decimal point than the
scaleparameter would indicate. This only occurs when the result doesn't require all of the precision allowed by thescale. For example:
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https://www.php.net/manual/en/function.bcmul.php