PHP rad2deg() Function – Convert Radians to Degrees
The rad2deg() PHP function converts a radian value to its equivalent angle in degrees, accepting a float parameter and returning the corresponding degree value, with an example showing the conversion of π/4 to 45 degrees.
rad2deg() is a PHP built‑in function that converts a radian value to the corresponding angle in degrees.
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Signature: float rad2deg(float $number) Parameter: $number – a radian value.
Return value: The angle in degrees corresponding to the given radian.
Example: <?php echo rad2deg(M_PI_4); // 45 ?> Note: The core technical content is the function documentation; the surrounding text is a light‑hearted reminder about sharing and following.
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