gmp_gcdext
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GMP Функции
PHP Manual

# gmp_hamdist

(PHP 4 >= 4.0.4, PHP 5)

gmp_hamdist — Hamming distance

### Описание

int gmp_hamdist ( resource `$a` , resource `$b` )

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

### Список параметров

`a`

  It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

  It should be positive.

`b`

  It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

  It should be positive.

### Возвращаемые значения

A GMP number resource.

### Примеры

Пример #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";
?>`

Результат выполнения данного примера:

    6
    6

### Смотрите также

- gmp_popcount()
- gmp_xor()

gmp_gcdext
gmp_init
GMP Функции
PHP Manual