gmp_scan0
(PHP 4 >= 4.0.4, PHP 5)
gmp_scan0 -- Scan for 0
Description
int
gmp_scan0 ( resource a, int start )
Scans a, starting with bit
start, towards more significant bits,
until the first clear bit is found. Returns the index of the
found bit. The index starts from 0.
例 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";
?>
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The printout of the above program will be:
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