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(PHP 4 >= 4.0.4, PHP 5, PHP 7)
gmp_random — Random number
$limiter
= 20
] )
Generate a random number. The number will be between
zero and the number of bits per limb multiplied by
limiter
. If limiter
is negative, negative numbers are generated.
A limb is an internal GMP mechanism. The number of bits in a limb is not static, and can vary from system to system. Generally, the number of bits in a limb is either 16 or 32, but this is not guaranteed.
limiter
The limiter.
可以是一个 GMP 数据 resouce ,或一个可以转换为数值的字符串。
A random GMP number.
Example #1 gmp_random() example
<?php
$rand1 = gmp_random ( 1 ); // random number from 0 to 1 * bits per limb
$rand2 = gmp_random ( 2 ); // random number from 0 to 2 * bits per limb
echo gmp_strval ( $rand1 ) . "\n" ;
echo gmp_strval ( $rand2 ) . "\n" ;
?>
以上例程会输出:
1915834968 8642564075890328087