# gmp_cmp

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

gmp_cmp — Compare numbers

### Description

gmp_cmp ( GMP `$a` , GMP `$b` ) : int

Compares two numbers.

### 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.

`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() 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\n";
?>`

The above example will output:

    1 -1 0