**`gmp_abs`** is a function of PHP that returns the absolute value of a  ﻿#key# GMP: GNU Multiple Precision Arithmetic Library #key# number which is passed to it as an argument.

# 
#  Syntax
``` PHP
gmp_abs(GMP|int|string $num): GMP
```
# 
#  Parameters

The function takes in one parameter `num`.

> `num` can be a numeric string, GMP object, or of type int.
##
## Return value

The function returns the absolute value of `num`. The value returned is of type GMP number.
##
## Code


<?php
$absoluteVal1 = gmp_abs("-16567863358");
$absoluteVal2 = gmp_abs("-1346023511");

echo gmp_strval($absoluteVal1) . "\n";
echo gmp_strval($absoluteVal2) . "\n";
?>

## Expected output

```
16567863358
1346023511
```

What is gmp_abs() function in PHP?

Returns the absolute value of a given GMP number or integer, outputting a GMP number.