gmp_import
(PHP 5 >= 5.6.1, PHP 7)
gmp_import — Import from a binary string
说明
gmp_import
( string
$data
[, int $word_size = 1
[, int $options = GMP_MSW_FIRST | GMP_NATIVE_ENDIAN
]] ) : GMPImport 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
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";
?>
以上例程会输出：
0 258