gmp_hamdist

    (PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

    gmp_hamdist — Hamming 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";


    echo gmp_popcount(gmp_xor($ham1, $ham2)) . "\n";
    ?>

    The above example will output:

    6 6

    See Also

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