CSPRNG 函数
PHP Manual

random_int

(PHP 7)

random_intGenerates cryptographically secure pseudo-random integers

说明

int random_int ( int $min , int $max )

Generates cryptographic random integers that are suitable for use where unbiased results are critical, such as when shuffling a deck of cards for a poker game.

The sources of randomness used for this function are as follows:

Note: Although this function was added to PHP in PHP 7.0, a » userland implementation is available for PHP 5.2 to 5.6, inclusive.

参数

min

The lowest value to be returned, which must be PHP_INT_MIN or higher.

max

The highest value to be returned, which must be less than or equal to PHP_INT_MAX.

返回值

Returns a cryptographically secure random integer in the range min to max, inclusive.

错误/异常

范例

Example #1 random_int() example

<?php
var_dump
(random_int(100999));
var_dump(random_int(-10000));
?>

以上例程的输出类似于:

int(248)
int(-898)

参见


CSPRNG 函数
PHP Manual