Trader 函数
PHP Manual

trader_atan

(PECL trader >= 0.2.0)

trader_atanVector Trigonometric ATan

说明

array trader_atan ( array $real )

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

参数

real

浮点数数组。

返回值

Returns an array with calculated data or false on failure.


Trader 函数
PHP Manual