gmp_random
(PHP 4 >= 4.0.4, PHP 5)
gmp_random -- Random number
Description
resource
gmp_random ( int limiter)
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.
例子 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";
?>
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The printout of the above program might be:
1915834968
8642564075890328087 |
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