php man page for gmp_testbit

GMP_TESTBIT(3)								 1							    GMP_TESTBIT(3)

gmp_testbit - Tests if a bit is set

SYNOPSIS
       bool gmp_testbit (GMP  $a, int  $index)

DESCRIPTION
	Tests if the specified bit is set.

PARAMETERS
	      o $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.

	      o $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(3) 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)

SEE ALSO
       gmp_setbit(3), gmp_clrbit(3).

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