What is PhpDig?
PhpDig is a PHP MySQL based
Web Spider & Search Engine.



deg2rad — Converts a value in degrees to its radian value.


float deg2rad(degrees);
float degrees: Degrees to convert


Radian value of the given degrees


Calculates the equivalent value of radians based on the specified argument, in degrees.


PHP 3 since 3.0.4, PHP 4

See also

See also rad2deg()


Example 672. Calculate the radians for a given value in degrees

$deg = 180.0;
$rad = deg2rad($deg);
echo "1/2 of a circle is $deg degrees or also $rad radians\n";

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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