gmp_popcount
Population count
Description
int gmp_popcount(GMPintstring $num)
Parameters
-
num
-
A GMP object, an int or a numeric string.
Return Values
The population count of num, as an int.
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: