(PHP 4, PHP 5, PHP 7, PHP 8)
deg2rad — Converts the number in degrees to the radian equivalent
num
Angular value in degrees
The radian equivalent of num
Приклад #1 deg2rad() example
<?php
echo deg2rad(45); // 0.785398163397
var_dump(deg2rad(45) === M_PI_4); // bool(true)
?>