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gmp_hamdist

(PHP 4 >= 4.0.4, PHP 5)

gmp_hamdist -- Hamming distance

Description

int gmp_hamdist ( resource a, resource b)

Returns the hamming distance between a and b. Both operands should be non-negative.

Beispiel 1. gmp_hamdist() example

<?php

                $ham1 = gmp_init("1001010011", 2);
$ham2 = gmp_init("1011111100", 2);

                echo gmp_hamdist($ham1, $ham2) . "\n";

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

The printout of the above program will be:

6
6

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