gmp_testbit

(No version information available, might be only in CVS)

gmp_testbit — Tests if a bit is set

bool gmp_testbit ( resource $a , int $index )

Tests if the specified bit is set.

a: It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.
index: The bit to test

Returns TRUE on success or FALSE on failure.

E_WARNING is issued when index is less than zero.

Example #1 gmp_testbit() example


<?php
$n = gmp_init("1000000");
var_dump(gmp_testbit($n, 1));
gmp_setbit($n, 1);
var_dump(gmp_testbit($n, 1));
?>

The above example will output:

bool(false)
bool(true)