php man page for gmp_cmp

GMP_CMP(3)								 1								GMP_CMP(3)

gmp_cmp - Compare numbers

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

DESCRIPTION
	Compares two numbers.

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 $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.

RETURN VALUES
	Returns a positive value if a > b, zero if a = b and a negative value if a < b.

EXAMPLES
       Example #1

	      gmp_cmp(3) example

	      <?php
	      $cmp1 = gmp_cmp("1234", "1000"); // greater than
	      $cmp2 = gmp_cmp("1000", "1234"); // less than
	      $cmp3 = gmp_cmp("1234", "1234"); // equal to

	      echo "$cmp1 $cmp2 $cmp3
";
	      ?>

	      The above example will output:

	      1 -1 0

PHP Documentation Group 														GMP_CMP(3)