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gmp_hamdist

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

gmp_hamdistHamming distance

Description

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

Returns the hamming distance between num1 and num2. Both operands should be non-negative.

Parameters

num1

A GMP object, an int or a numeric string.

It should be positive.

num2

A GMP object, an int or a numeric string.

It should be positive.

Return Values

The hamming distance between num1 and num2, as an int.

Examples

Example #1 gmp_hamdist() example

<?php
$ham1 = gmp_init("1001010011", 2);
$ham2 = gmp_init("1011111100", 2);
echo gmp_hamdist($ham1, $ham2) . "\n";

/* hamdist is equivalent to: */
echo gmp_popcount(gmp_xor($ham1, $ham2)) . "\n";
?>

The above example will output:

6
6

See Also

© 1997–2020 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.gmp-hamdist.php