GMP_POPCOUNT(3) 1 GMP_POPCOUNT(3)
gmp_popcount - Population count
SYNOPSIS
int gmp_popcount (GMP $a)
DESCRIPTION
Get the population count.
PARAMETERS
o $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(3) example
<?php
$pop1 = gmp_init("10000101", 2); // 3 1's
echo gmp_popcount($pop1) . "
";
$pop2 = gmp_init("11111110", 2); // 7 1's
echo gmp_popcount($pop2) . "
";
?>
The above example will output:
3
7
PHP Documentation Group GMP_POPCOUNT(3)
