# gmp_init

(PHP 4 >= 4.0.4, PHP 5)

gmp_init — Create GMP number

### Description

resource gmp_init ( mixed `$number` [, int `$base` ] )

Creates a GMP number from an integer or string.

### Parameters

`number`

  An integer or a string. The string representation can be decimal, hexadecimal or octal.

`base`

  The base. Defaults to 0.

  The base may vary from 2 to 36. If base is 0 (default value), the actual base is determined from the leading characters: if the first two characters are 0x or 0X, hexadecimal is assumed, otherwise if the first character is "0", octal is assumed, otherwise decimal is assumed.

### Return Values

A GMP number resource.

### ChangeLog

Version | Description
--- | ---
4.1.0 | The optional `base` parameter was added.

### Examples

Example#1 Creating GMP number

`<?php
$a = gmp_init(123456);
$b = gmp_init("0xFFFFDEBACDFEDF7200");
?>`

### Notes

> Note: It is not necessary to call this function if you want to use integer or string in place of GMP number in GMP functions, like gmp_add(). Function arguments are automatically converted to GMP numbers, if such conversion is possible and needed, using the same rules as gmp_init().