(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
gmp_scan1 — Scan for 1
Scans num1, starting with bit
start, towards more significant bits,
until the first set bit is found.
num1The number to scan.
Bir GMP nesnesi, bir tamsayı veya sayısal bir dizge.
startThe starting bit.
Returns the index of the found bit, as an int. If no set bit is found, -1 is returned.
Örnek 1 gmp_scan1() example
<?php
// "1" bit is found at position 3. index starts at 0
$s1 = gmp_init("01000", 2);
echo gmp_scan1($s1, 0) . "\n";
// "1" bit is found at position 9. index starts at 5
$s2 = gmp_init("01000001111", 2);
echo gmp_scan1($s2, 5) . "\n";
?>Yukarıdaki örneğin çıktısı:
3 9