gmp_export

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

gmp_export — Export to a binary string

Опис

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

Exports a GMP number to a binary string. This function can handle arbitrarily large numbers beyond the range of PHP's native integer type, with configurable word size and byte order, similar in spirit to pack().

The sign of the number is ignored; exporting a negative number produces the same result as exporting its absolute value.

Параметри

num

The GMP number to export.

word_size

The number of bytes per word in the output. The total length of the returned string will be a multiple of this value. Default value: 1.

flags

A bitmask controlling word order and byte order. Word order: GMP_MSW_FIRST (most significant word first, default) or GMP_LSW_FIRST (least significant word first). Byte order within each word: GMP_NATIVE_ENDIAN (default), GMP_BIG_ENDIAN, or GMP_LITTLE_ENDIAN. Default value: GMP_MSW_FIRST | GMP_NATIVE_ENDIAN.

Значення, що повертаються

Returns a string containing the binary representation of the GMP number. The string is empty if the number is zero.

Журнал змін

Версія Опис
8.0.0 This function no longer returns false on failure.

Приклади

Приклад #1 gmp_export() example

<?php
$number = gmp_init(16705);
echo gmp_export($number) . "\n";
?>

Поданий вище приклад виведе:

AA

Прогляньте також

Found A Problem?

Learn How To Improve This Page • Submit a Pull Request • Report a Bug
＋add a note

User Contributed Notes

There are no user contributed notes for this page.