gmp_random_bits()
(PHP 5 >= 5.6.3, PHP 7)
Random number
说明
gmp_random_bits(int $bits): GMP
Generate a random number. The number will be between 0 and(2 **$bits)- 1.
$bitsmust greater than 0, and the maximum value is restricted by available memory.
参数
- $bits
The number of bits.
可以是一个 GMP数据resouce,或一个可以转换为数值的字符串。
返回值
A random GMP number.
范例
gmp_random_bits() example
<?php $rand1 = gmp_random_bits(3); // random number from 0 to 7 $rand2 = gmp_random_bits(5); // random number from 0 to 31 echo gmp_strval($rand1) . "\n"; echo gmp_strval($rand2) . "\n"; ?>
以上例程会输出:
3 15