Trader 函数
PHP Manual

trader_cos

(PECL trader >= 0.2.0)

trader_cosVector Trigonometric Cos

说明

array trader_cos ( array $real )

Calculates the cosine for each value in real and returns the resulting array.

参数

real

Array of real values.

返回值

Returns an array with calculated data or false on failure.


Trader 函数
PHP Manual