</form>
</body>
</html>
<?php
include 'file_7_extraTraining.php';
class Triangle extends Shape
{
private $edge1, $edge2, $edge3;
function __construct($edge1, $edge2, $edge3)
{
$this->edge1 = $edge1;
$this->edge2 = $edge2;
$this->edge3 = $edge3;
}
function getArea()
{
$temp = $this->getPerimeter() / 2;
return sqrt($temp * ($temp - $this->edge1) * ($temp - $this->edge2) * ($temp - $this->edge3));
}
function getPerimeter()
{
return $this->edge1 + $this->edge2 + $this->edge3;
}
}
if (isset($_POST["btn"])) {
$edge = $_POST["edge"];
$triangle1 = new Triangle($edge[0], $edge[1], $edge[2]);
echo "三角形的周长：" . $triangle1->getPerimeter() . "<br/>";
echo "三角形的面积：" . $triangle1->getArea() . "<br/>";
}
<?php
/**
* Created by PhpStorm.
* User: ET
* Date: 7/3/2015
* Time: 10:39 PM
*/
function __autoload($class)
{
require_once $class . '.php';
}
$side1 = 5;
$side2 = 10;
$side3 = 13;
echo "<h2>With sides of {$side1}, {$side2}, and {$side3}....</h2>";
$t = new Triangle($side1, $side2, $side3);
echo '<p>The area of the triangle is ' . $t->getArea() . '</p>';
echo '<p>The perimeter of the triangle is ' . $t->getPerimeter() . '</p>';
echo isset($_POST["c"]) ? $_POST["c"] : "";
?>
"/><br/>
<br/>
<input type="submit"/>
</form>
<?php
if (isset($_POST["a"]) and isset($_POST["b"]) and isset($_POST["c"])) {
?>
<?php
require "model/Triangle.php";
$t = new Triangle($_POST["a"], $_POST["b"], $_POST["c"]);
?>
<ul>
<li>Perimeter = <?php
echo $t->getPerimeter();
?>
</li>
<li>Area = <?php
echo $t->getArea();
?>
</li>
</ul>
<?php
}
?>
</body>
</html>
