Php/docs/function.gmp-clrbit
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gmp_clrbit
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
gmp_clrbit — Clear bit
Description
gmp_clrbit
( GMP $a
, int $index
) : void
Clears (sets to 0) bit index
in
a
. The index starts at 0.
Parameters
a
- Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.
index
- The index of the bit to clear. Index 0 represents the least significant bit.
Examples
Example #1 gmp_clrbit() example
<?php$a = gmp_init("0xff");gmp_clrbit($a, 0); // index starts at 0, least significant bitecho gmp_strval($a) . "\n";?>
The above example will output:
254
Notes
Note:
Unlike most of the other GMP functions, gmp_clrbit() must be called with a GMP resource that already exists (using gmp_init() for example). One will not be automatically created.