# stats_dens_gamma

(PECL stats >= 1.0.0)

stats_dens_gamma — Probability density function of the gamma distribution

### 说明

stats_dens_gamma ( float `$x` , float `$shape` , float `$scale` ) : float

Returns the probability density at `x`, where the random variable follows the gamma distribution of which the shape parameter is `shape` and the scale parameter is `scale`.

### 参数

`x`

  The value at which the probability density is calculated

`shape`

  The shape parameter of the distribution

`scale`

  The scale parameter of the distribution

### 返回值

The probability density at `x` or `FALSE` for failure.