rad2deg
(PHP 4, PHP 5)
rad2deg — Converts the radian number to the equivalent number in degrees
說明
float rad2deg
( float $number
)
This function converts number from radian to degrees.
參數
- number
-
A radian value
Return值
The equivalent of number in degrees
範例
Example#1 rad2deg() example
<?php
echo rad2deg(M_PI_4); // 45
?>