PHP deg2rad()Function
Examples
Convert degrees to radians:
<?php
echo deg2rad("45") . "<br>";
echo deg2rad("90") . "<br>";
echo deg2rad("360");
?>
echo deg2rad("45") . "<br>";
echo deg2rad("90") . "<br>";
echo deg2rad("360");
?>
Run example »
Definition and Usage
The deg2rad() function converts an angle value to a radian value.
Tip:To convert radians to degrees, seerad2deg()function.
Syntax
deg2rad(number);
| Parameter | Description |
|---|---|
| number | Required. Specifies the angle to convert. |
Technical Details
| Return value: | numberThe corresponding radian. |
|---|---|
| Return type: | Float |
| PHP Version: | 4+ |
More Examples
Example 1
Convert degrees to the corresponding radians:
<?php
$deg = 180;
$rad = deg2rad($deg);
echo "$deg degrees is equal to $rad radians.";
?>
$deg = 180;
$rad = deg2rad($deg);
echo "$deg degrees is equal to $rad radians.";
?>
Run example »
PHP Math Reference Manual Other Extensions