php man page for gmp_hamdist

GMP_HAMDIST(3)								 1							    GMP_HAMDIST(3)

gmp_hamdist - Hamming distance

SYNOPSIS
       int gmp_hamdist (GMP  $a, GMP  $b)

DESCRIPTION
	Returns the hamming distance between $a and $b. Both operands should be non-negative.

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. It should be positive.

	      o $b
		-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. It should be positive.

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_hamdist(3) example

	      <?php
	      $ham1 = gmp_init("1001010011", 2);
	      $ham2 = gmp_init("1011111100", 2);
	      echo gmp_hamdist($ham1, $ham2) . "
";

	      /* hamdist is equivalent to: */
	      echo gmp_popcount(gmp_xor($ham1, $ham2)) . "
";
	      ?>

	      The above example will output:

	      6
	      6

SEE ALSO
       gmp_popcount(3), gmp_xor(3).

PHP Documentation Group 													    GMP_HAMDIST(3)