gmp_import()

(PHP 5 >= 5.6.1, PHP 7)

Import from a binary string

说明

gmp_import(string $data[,int $word_size= 1[,int $options= GMP_MSW_FIRST| GMP_NATIVE_ENDIAN]]): GMP

Import a GMP number from a binary string

参数

$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.

$options

Default value is GMP_MSW_FIRST | GMP_NATIVE_ENDIAN.

返回值

Returns a GMP number 或者在失败时返回FALSE.

范例

gmp_import() example

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

以上例程会输出：

0
258

参见

• gmp_export()Export to a binary string