gmp_clrbit
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
gmp_clrbit — Clear bit
Description
void gmp_clrbit ( GMP $a , int $index ) 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.
Return Values
A GMP number resource in PHP 5.5 and earlier, or a GMP object in PHP 5.6 and later.
Examples
Example #1 gmp_clrbit() example
<?php
$a?=?gmp_init("0xff");
gmp_clrbit($a,?0);?//?index?starts?at?0,?least?significant?bit
echo?gmp_strval($a)?.?"\n";
?>The above example will output:
254Notes
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.
See Also
- gmp_setbit() - Set bit
- gmp_testbit() - Tests if a bit is set
← gmp_and
gmp_cmp →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
本文档系腾讯云开发者社区成员共同维护，如有问题请联系 cloudcommunity@tencent.com
