gmp_scan0

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

gmp_scan0Scan for 0

Description

gmp_scan0(GMP|int|string $num1, int $start): int

Scans num1, starting with bit start, towards more significant bits, until the first clear bit is found.

Parameters

num1

The number to scan.

A GMP object, an int or a numeric string.

start

The starting bit.

Return Values

Returns the index of the found bit, as an int. The index starts from 0.

Examples

Example #1 gmp_scan0() example

<?php
// "0" bit is found at position 3. index starts at 0
$s1 gmp_init("10111"2);
echo 
gmp_scan0($s10) . "\n";

// "0" bit is found at position 7. index starts at 5
$s2 gmp_init("101110000"2);
echo 
gmp_scan0($s25) . "\n";
?>

The above example will output:

3
7

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