$new_triangle = new Triangle($side1, $side2, $side3); // $new_triangle->setFirst($firstNum); // $new_triangle->setSecond($secondNum); // $new_triangle->setThird($thirdNum); ?> <!DOCTYPE html> <html> <head> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.5/css/materialize.min.css"> <title>Triangles</title> </head> <body> <?php $new_side1 = $new_triangle->getFirst(); $new_side2 = $new_triangle->getSecond(); $new_side3 = $new_triangle->getThird(); if (!$new_side1 || !$new_side2 || !$new_side3) { echo "<h1>Enter all sides</h1>"; } elseif ($new_side1 + $new_side2 <= $new_side3 || $new_side1 + $new_side3 <= $new_side2 || $new_side2 + $new_side3 <= $new_side1) { echo "<h2> Not a triangle </h2>"; } elseif ($new_side1 == $new_side2 && $new_side2 == $new_side3) { echo "<h2> Equilateral </h2>"; } elseif ($new_side1 == $new_side2 || $new_side2 == $new_side3 || $new_side1 == $new_side3) { echo "<h2> isosceles </h2>"; } elseif ($new_side1 != $new_side2 || $new_side2 != $new_side3 || $new_side1 != $new_side3) { echo "<h2> Scalene </h2>"; } ?> <script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.5/js/materialize.min.js"></script> </body>