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update : 2015.11.03
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stats_rand_gen_beta(PECL stats >= 1.0.0) stats_rand_gen_beta — Generates beta random deviate 설명
float stats_rand_gen_beta
( float
$a
, float $b
)Returns 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. 인수
반환값
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