(PECL stats >= 1.0.0)
stats_cdf_chisquare — Calculates any one parameter of the chi-square distribution given values for the others.
$par1
, float $par2
, int $which
)本函数还未编写文档，仅有参数列表。
par1
par2
which
clifflu at gmail dot com (2011-02-08 22:28:18)
To get the chi-square CDF (Cumulative Distribution Function), pass chi-square, DOF (Degree of Freedom), and 1 in this order.
CDF = 1 - p-value