**`gmp_root`** is a function in PHP that returns the integer part of the _nth_ root.

# 
## Syntax
```
gmp_root(GMP|int|string $num, int $Nth): GMP
```

## Parameters

The function takes in two parameters: `num` and `Nth`.

* **`num`** - can be a numeric `string`, #key# GMP: GNU Multiple Precision Arithmetic Library #key# object, or of type `int`.

* **`Nth`** - The positive root to take of `num`.
## Return value

`gmp_root` returns the integer part of the `Nth` root. The value returned is type `GMP` number.
## Code

<?php
// gmp_init is used to create a GMP number
$val1 = gmp_init("1001", 2);
$num = 3;

$val2 = gmp_root($val1, $num); 
echo gmp_strval($val2, 2);
?>

What is gmp_root in PHP?

gmp_root returns the integer part of the nth root of a number in PHP using GMP.

What is gmp_root in PHP?

Syntax

Parameters

Return value

Code

Expected output