Untitled

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
        <?php
            class RectangleOne
            {
                public $length = 0;
                public $width = 0;
                public function getPerimeter()
                {
                    return "<br> Perimeter is : ".(2*($this->length + $this->width));
                }
                public function getArea()
                {
                    return "<br> Area is : ".($this->length * $this->width);
                }
            }
            $obj = new RectangleOne();
            $obj -> length=10;
            $obj -> width=20;
           echo $obj-> getPerimeter();
           echo $obj-> getArea();
        ?>
</body>
</html>