deg2rad
(PHP 3 >= 3.0.4, PHP 4, PHP 5)
deg2rad --
Converts the number in degrees to the radian equivalent
Description
float
deg2rad ( float number )
This function converts number from degrees
to the radian equivalent.
Example 1. deg2rad() example
<?php
echo deg2rad(45); // 0.785398163397
var_dump(deg2rad(45) === M_PI_4); // bool(true)
?>
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See also rad2deg().