Compare numbers

# gmp_cmp

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

gmp_cmp — Compare numbers

### Description

gmp_cmp(GMP|int|string `$num1`, GMP|int|string `$num2`): int

Compares two numbers.

### Parameters

`num1`

  A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when `base` is equal to 0).

`num2`

  A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when `base` is equal to 0).

### 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

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