(PHP 4 >= 4.0.4, PHP 5, PHP 7)
Clear bit
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.
Returns:
A GMP number resource in PHP 5.5 and earlier, or a GMP object in PHP 5.6 and later.
Notes:
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.
Examples:
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
See also:
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