**`bcpow`** is a function in PHP that calculates the value of the arbitrary precision number raised to the power of another number.

# 
## Syntax
```
bcpow(string $num, string $exp, int $scale = null): string
```

## Parameters

* **`num`** - It is the base number. `num` is of type `string`.

* **`exp`** - It is the exponent. `exp` is of the integer type.
* **`scale`** - variable of type `int`. It is an optional parameter. `scale` is used to set the number of digits after the decimal place in the result.  The default value of `scale` is 0.


## Return value

The function returns the value of `num` raised to the `exp`. The value returned is of type `string`.

## Code


<?php
$num1 = '4.2';
$num2 = '3';

echo bcpow($num1, $num2);
echo bcpow($num1, $num2, 2);
?>

What is bcpow in PHP?

bcpow in PHP calculates the value of a base number raised to an exponent with optional precision.

What is bcpow in PHP?

Syntax

Parameters

Return value

Code

Expected output