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Последние активные темы форума |
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gmp_scan1
(PHP 4 >= 4.0.4, PHP 5) gmp_scan1 -- Scan for 1
Descriptionint gmp_scan1 ( resource a, int start ) Scans a, starting with bit
start, towards more significant bits,
until the first set bit is found. Returns the index of the found
bit. If no set bit is found, -1 is returned.
Пример 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"
;
?>
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The printout of the above program will be:
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