deg2rad

    (PHP 4, PHP 5, PHP 7, PHP 8)

    deg2rad — Converts the number in degrees to the radian equivalent

    Description

    deg2rad(float $num): float

    This function converts num from degrees to the radian equivalent.

    Parameters

    num

    Angular value in degrees

    Return Values

    The radian equivalent of num

    Examples

    Example #1 deg2rad() example

    <?php

    echo deg2rad(45); // 0.785398163397
    var_dump(deg2rad(45) === M_PI_4); // bool(true)

    ?>

    See Also

    • rad2deg() - Converts the radian number to the equivalent number in degrees

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