gmp_randomgmp_scan0
(PHP 4 >= 4.0.4, PHP 5)
gmp_scan0 — Scan for 0
설명
int gmp_scan0
( resource $a
, int $start
)
Scans a, starting with bit start, towards more significant bits, until the first clear bit is found.
반환값
Returns the index of the found bit, as an integer. The index starts from 0.
예제
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";
?>
위 예제의 출력:
3 7
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