**`gmp_hamdist`** is a function in PHP that calculates the hamming distance between two numbers.

> The **hamming distance** is the number of bit positions in which the two bits are not the same.


# 
## Syntax
```
gmp_hamdist(GMP|int|string $num1, GMP|int|string $num2): int
```

## Parameters
The function takes in two parameters: 

1. `num1`  
2. `num2`

> Both the parameters should be positive.

> `num1` and `num2` can be a numeric string, #key# GMP: GNU Multiple Precision Arithmetic Library #key# object, or of the `int` type.
## Return value

The function returns the hamming distance between `num1` and `num2`. The value returned is of the `int` type.
## Code

<?php

// gmp_init is used to create a GMP number
$val1 = gmp_init("1001010011", 2);
$val2 = gmp_init("1011111100", 2);
   
$distance = gmp_hamdist($val1, $val2);
echo $distance."\n";
?>

What is gmp_hamdist in PHP?

gmp_hamdist calculates the bit difference between two positive numbers, returning the hamming distance as an integer.

What is gmp_hamdist in PHP?

Syntax

Parameters

Return value

Code

Expected output