Php/docs/function.gmp-scan0
gmp_scan0
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
gmp_scan0 — Scan for 0
Description
gmp_scan0
( GMP $a
, int $start
) : int
Scans a, starting with bit
start, towards more significant bits,
until the first clear bit is found.
Parameters
aThe number to scan.
Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.
startThe starting bit.
Return Values
Returns the index of the found bit, as an int. The index starts from 0.
Examples
Example #1 gmp_scan0() example
<?php// "0" bit is found at position 3. index starts at 0$s1 = gmp_init("10111", 2);echo gmp_scan0($s1, 0) . "\n";// "0" bit is found at position 7. index starts at 5$s2 = gmp_init("101110000", 2);echo gmp_scan0($s2, 5) . "\n";?>
The above example will output:
3 7
