PHP-Handbuch: Create GMP number

Beschreibung

GMP gmp_init ( mixed $number [, int $base = 0 ] )

Creates a GMP number from an integer or string.

Parameter-Liste

number

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

base

The base.

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.

Rückgabewerte

Eine resource für einen GMP-Wert in PHP 5.5 oder vorher, oder ein GMP-Objekt in PHP 5.6 und später.

Changelog

Version	Beschreibung
5.3.2	The `base` was extended from 2 to 36, to 2 to 62 and -2 to -36.

Anmerkungen

Hinweis:
To use the extended base introduced in PHP 5.3.2, then PHP must be compiled against GMP 4.2.0 or greater.

Beispiele

Beispiel #1 Creating GMP number


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

Anmerkungen

Hinweis:
It is not necessary to call this function in order to use integers or strings in place of GMP numbers in GMP functions (such as with gmp_add). Function arguments are automatically converted to GMP numbers, if such conversion is possible and needed, using the same rules as gmp_init.