PHP. Учебник. 2005

gmp_popcount

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gmp_popcount

(PHP 4 >= 4.0.4, PHP 5)gmp_popcount -- Population count

Description

int gmp_popcount ( resource a )


- Return the population count of a.

Пример 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

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