gmp_init
(PHP 4 >= 4.0.4, PHP 5)
gmp_init — Create GMP number
说明
resource gmp_init
( mixed $number
[, int $base
] )
Creates a GMP number from an integer or string.
参数
-
number
-
An integer or a string. The string representation can be decimal,
hexadecimal or octal.
-
base
-
The base. Defaults to 0.
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.
范例
Example#1 Creating GMP number
<?php
$a = gmp_init(123456);
$b = gmp_init("0xFFFFDEBACDFEDF7200");
?>
注释
Note:
It is not necessary to call this function if you want to use
integer or string in place of GMP number in GMP functions, like
gmp_add(). Function arguments are
automatically converted to GMP numbers, if such conversion is
possible and needed, using the same rules as
gmp_init().