(PHP 4, PHP 5, PHP 7)
deg2rad — Converts the number in degrees to the radian equivalent
$number
) : float
This function converts number from degrees
to the radian equivalent.
numberAngular value in degrees
The radian equivalent of number
Example #1 deg2rad() example
<?php
echo deg2rad(45); // 0.785398163397
var_dump(deg2rad(45) === M_PI_4); // bool(true)
?>