gmp_clrbit
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:
254
Notes
Note: Unlike most of the other GMP functions,gmp_clrbit()must be called with a GMP resource that already exists (usinggmp_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 →
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