function testGetArea()
{
// Need a Rectangle:
$r = new Rectangle(8, 9);
// The assertion tests the math:
$this->assertEquals(72, $r->getArea());
}
{
return $width * $height;
}
public function getPerimeter($width, $height)
{
return $width + $height;
}
public function isSquare()
{
return $this->width == $this->height;
}
}
$width = 160;
$height = 75;
echo "<h2>With a width of {$width} and a height of {$height}...</h2>";
$r = new Rectangle($width, $height);
echo '<p>The area of the rectangle is ' . $r->getArea($width, $height) . '</p>';
echo '<p>The perimeter of the rectangle is ' . $r->getPerimeter($width, $height) . '</p>';
echo '<p>This rectangle is ';
if ($r->isSquare()) {
echo 'also';
} else {
echo 'not';
}
echo ' a square.</p>';
?>
</p>
</body>
</html>
<?php
require_once __DIR__ . "/../vendor/autoload.php";
require_once __DIR__ . "/../src/Rectangle.php";
$app = new Silex\Application();
$app->get("/", function () {
return "Home";
});
$app->get("/new_rectangle", function () {
return "<!DOCTYPE html>\n <html>\n <head>\n <link rel='stylesheet' href='https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css'>\n <title>Make a rectangle!</title>\n </head>\n <body>\n <div class='container'>\n <h1>Geometry Checker</h1>\n <p>Enter the dimensions of your rectangle to see if it's a square.</p>\n <form action='/view_rectangle'>\n <div class='form-group'>\n <label for='length'>Enter the length:</label>\n <input id='length' name='length' class='form-control' type='number'>\n </div>\n <div class='form-group'>\n <label for='width'>Enter the width:</label>\n <input id='width' name='width' class='form-control' type='number'>\n </div>\n <button type='submit' class='btn-success'>Create</button>\n </form>\n </div>\n </body>\n </html>";
});
$app->get("/view_rectangle", function () {
$my_rectangle = new Rectangle($_GET['length'], $_GET['width']);
$area = $my_rectangle->getArea();
if ($my_rectangle->isSquare()) {
return "<h1>Congratulations! You made a square! Its area is {$area}.</h1>\n <a href='/new_rectangle'>Back!</a>";
} else {
return "<h1>Sorry! This isn't a square. Its area is {$area}.</h1>\n <a href='/new_rectangle'>Back!</a>";
}
});
return $app;
<?php require_once "rectangle.php"; require_once "square.php"; $rect1 = new Rectangle(9, 8); echo "The area of rectangle 1 is: " . $rect1->getArea() . PHP_EOL; $rect2 = new Rectangle(4, 5); echo "The area of rectangle 2 is: " . $rect2->getArea() . PHP_EOL; $square1 = new Square(5); echo "The perim of square 1 is: " . $square1->getPerimeter() . PHP_EOL; $square2 = new Square(4); echo "The perim of square 2 is: " . $square2->getPerimeter() . PHP_EOL;
<?php // PHP exercise about extending classes from a parent class. Rectangle is the parent class. // Square is the child class extending off of Rectangle. // This file runs in the command line. // Because Square.php requires Rectangle.php, this file has access to both. require_once 'Square.php'; $rectangle = new Rectangle(5, 10); echo 'Rectangle area: ' . $rectangle->getArea() . PHP_EOL; echo 'Rectangle perimeter: ' . $rectangle->getPerimeter() . PHP_EOL; $square = new Square(9); echo 'Square area: ' . $square->getArea() . PHP_EOL; echo 'Square perimeter: ' . $square->getPerimeter() . PHP_EOL;
}
public function getPerimeter()
{
return $this->width * 2 + $this->height * 2;
}
public function isSquare()
{
if ($this->width == $this->height) {
return true;
}
}
}
$width = 160;
$height = 75;
echo "<h2>With a width of {$width} and a height of {$height}...</h2>";
$r = new Rectangle($width, $height);
echo '<p>The area of the rectangle is ' . $r->getArea() . '</p>';
echo '<p>The perimeter of the rectangle is ' . $r->getPerimeter() . '</p>';
echo '<p>This rectangle is ';
if ($r->isSquare()) {
echo 'also';
} else {
echo 'not';
}
echo ' a square.</p>';
?>
</p>
</body>
</html>
}
}
function getArea()
{
return $this->length * $this->width;
}
}
$my_rectangle = new Rectangle();
$my_rectangle->length = $_GET["length"];
$my_rectangle->width = $_GET["width"];
?>
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
<title>Make a Rectangle</title>
</head>
<body>
<div class="container">
<?php
if ($my_rectangle->isSquare()) {
echo "<h1>Congratulations! You made a square!</h1>";
} else {
echo "<h1>Sorry! This isn't a square</h1>";
}
echo "<p>The area is: " . $my_rectangle->getArea() . "</p>";
?>
</div>
</body>
</html>
<?php require_once "rectangle.php"; require_once "square.php"; $rectangle = new Rectangle(15, 5); $square = new Square(10); echo $rectangle->getArea() . PHP_EOL; echo $square->getArea() . PHP_EOL; echo $square->getPerimeter() . PHP_EOL;
*/
// Include the class definition:
// require('Rectangle.php');
function __autoload($class)
{
require $class . '.php';
}
// Define the necessary variables:
$width = 160;
$height = 75;
// Print a little introduction:
echo "<h2>With a width of {$width} and a height of {$height}...</h2>\n";
// Create a new object:
$r = new Rectangle($width, $height);
// Print the area.
echo '<p>The area of the rectangle is ' . $r->getArea() . "</p>\n";
// Print the perimeter.
echo '<p>The perimeter of the rectangle is ' . $r->getPerimeter() . '</p>' . PHP_EOL;
// Is this a square?
echo '<p>This rectangle is ';
if ($r->isSquare()) {
echo 'also';
} else {
echo 'not';
}
echo ' a square.</p>' . PHP_EOL;
// Delete the object:
unset($r);
?>
</body>
</html>
宽度：<input type="text" name="width" > <br/>
高度：<input type="text" name="height" > <br/>
<input type="submit" name="btn" value="计算">
</form>
</body>
</html>
<?php
include 'file_7_extraTraining.php';
class Rectangle extends Shape
{
private $width, $height;
function __construct($width, $height)
{
$this->width = $width;
$this->height = $height;
}
function getArea()
{
return $this->width * $this->height;
}
function getPerimeter()
{
return 2 * $this->width + 2 * $this->height;
}
}
if (isset($_POST["btn"])) {
$rect1 = new Rectangle($_POST["width"], $_POST["height"]);
echo "矩形的周长：" . $rect1->getPerimeter() . "<br/>";
echo "矩形的面积：" . $rect1->getArea() . "<br/>";
}
<?php require_once 'square.php'; $rectangle = new Rectangle(4, 5); echo 'The area is: ' . $rectangle->getArea() . PHP_EOL; $square = new Square(4); echo 'The area is: ' . $square->getArea() . PHP_EOL; echo 'The perimeter is: ' . $square->perimeter() . PHP_EOL;
