PHP 7.0.6 Released

    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 (using gmp_init() for example). One will not be automatically created.

    See Also

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