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gmp_hamdist	gmp_init

GMP Functions	Last updated: Mon, 26 Oct 2026

gmp_import

(PHP 5 >= 5.6.1, PHP 7, PHP 8)

gmp_import — Import from a binary string

Description

function gmp_import(string $data, int $word_size = 1, int $flags = GMP_MSW_FIRST | GMP_NATIVE_ENDIAN): GMP

Import a GMP number from a binary string

Parameters

data: The binary string being imported
word_size: Default value is 1. The number of bytes in each chunk of binary data. This is mainly used in conjunction with the options parameter.
flags: Default value is GMP_MSW_FIRST | GMP_NATIVE_ENDIAN.

Return Values

Returns a GMP number.

Changelog

Version	Description
8.0.0	This function no longer returns `false` on failure.

Examples

Example #1 gmp_import() example

<?php
$number = gmp_import("\0");
echo gmp_strval($number) . "\n";

$number = gmp_import("\0\1\2");
echo gmp_strval($number) . "\n";
?>

The above example will output:

0
258

See Also

gmp_export() - Export to a binary string

gmp_hamdist	gmp_init

GMP Functions	Last updated: Mon, 26 Oct 2026