Php/docs/function.gmp-testbit
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gmp_testbit
(PHP 5 >= 5.3.0, PHP 7)
gmp_testbit — Tests if a bit is set
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 bit to test
Return Values
Returns TRUE if the bit is set in resource $a,
otherwise FALSE.
Errors/Exceptions
An E_WARNING level error is issued when
index is less than zero, and FALSE
is returned.
Examples
Example #1 gmp_testbit() example
<?php$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)
