PHP 7.0.6 Released

    gmp_popcount

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

    gmp_popcount — Population count

    Description

    int gmp_popcount ( GMP $a )

    Get the population count.

    Parameters

    a

    Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.

    Return Values

    The population count of a, as an integer.

    Examples

    Example #1 gmp_popcount() example

    <?php
    $pop1     = gmp_init("10000101", 2); // 3 1's
    echo gmp_popcount($pop1) . "\n";
    $pop2 = gmp_init("11111110", 2); // 7 1's
    echo gmp_popcount($pop2) . "\n";
    ?>

    The above example will output:

    3
7

    User Contributed Notes

    There are no user contributed notes for this page.
    To Top