PHP - Manual: stats_rand_gen_beta
2024-12-24
(PECL stats >= 1.0.0)
stats_rand_gen_beta — Generates a random deviate from the beta distribution
$a
, float $b
) : floatReturns a random deviate from the beta distribution with parameters A and B. The density of the beta is x^(a-1) * (1-x)^(b-1) / B(a,b) for 0 < x <. Method R. C. H. Cheng.
a
The shape parameter of the beta distribution
b
The shape parameter of the beta distribution
A random deviate
官方地址:https://www.php.net/manual/en/function.stats-rand-gen-beta.php