PHP deg2rad() Function
Example
Convert degrees to radians:
<?php
echo deg2rad("45") . "<br>";
echo deg2rad("90") . "<br>";
echo deg2rad("360");
?>
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Definition and Usage
The deg2rad() function converts a degree value to a radian value.
Tip: To convert a radian value to a degree value, look at the rad2deg() function.
Syntax
deg2rad(number);
Parameter Values
| Parameter | Description |
|---|---|
| number | Required. Specifies the degree to convert |
Technical Details
| Return Value: | The radian equivalent of number |
|---|---|
| Return Type: | Float |
| PHP Version: | 4+ |
More Examples
Example
Convert a degree into its radian equivalent:
<?php
$deg = 180;
$rad = deg2rad($deg);
echo "$deg degrees is equal to $rad radians.";
?>
Try it Yourself »
❮ PHP Math Reference
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