PHP Manual
Statistic 函数
Returns the inner product of two vectors

stats_stat_innerproduct

(PECL stats >= 1.0.0)

stats_stat_innerproduct — Returns the inner product of two vectors

说明

stats_stat_innerproduct ( array $arr1 , array $arr2 ) : float

Returns the inner product of arr1 and arr2.

参数

arr1: The first array
arr2: The second array

返回值

Returns the inner product of arr1 and arr2, or FALSE on failure.

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