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;