(PHP 4 >= 4.0.4, PHP 5)
Return the population count of a.
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 printout of the above program will be:
3 7
