gmp_clrbit

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

gmp_clrbit — Clear bit

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gmp_clrbit ( GMP $a , int $index ) : void

Clears (sets to 0) bit index in a. The index starts at 0.

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a

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index

The index of the bit to clear. Index 0 represents the least significant bit.

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GMP 锟斤拷值锟斤拷源.

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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";
?>

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254

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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.

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