(PHP 5 >= 5.6.3, PHP 7)
gmp_random_range — Random number
Generate a random number. The number will be between
min and max.
min and max can both be negative but min must always be less than max.
minA GMP number representing the lower bound for the random number
maxA GMP number representing the upper bound for the random number
A random GMP number.
Example #1 gmp_random_range() example
<?php
$rand1 = gmp_random_range(0, 100); // random number between 0 and 100
$rand2 = gmp_random_range(-100, -10); // random number between -100 and -10
echo gmp_strval($rand1) . "\n";
echo gmp_strval($rand2) . "\n";
?>
以上例程会输出：
42 -67