PHP 8.1.0 RC 2 available for testing

gmp_scan1

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

gmp_scan1Scan for 1

Açıklama

gmp_scan1(GMP|int|string $num1, int $start): int

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

Değiştirgeler

num1

The number to scan.

Bir GMP nesnesi, bir tamsayı veya sayısal bir dizge.

start

The starting bit.

Dönen Değerler

Returns the index of the found bit, as an int. If no set bit is found, -1 is returned.

Örnekler

Örnek 1 gmp_scan1() example

<?php
// "1" bit is found at position 3. index starts at 0
$s1 gmp_init("01000"2);
echo 
gmp_scan1($s10) . "\n";

// "1" bit is found at position 9. index starts at 5
$s2 gmp_init("01000001111"2);
echo 
gmp_scan1($s25) . "\n";
?>

Yukarıdaki örneğin çıktısı:

3
9

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