Trader 函数
PHP Manual

trader_ln

(PECL trader >= 0.2.0)

trader_lnVector Log Natural

说明

array trader_ln ( array $real )

Calculates the natural logarithm 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