?? ?? ??
1, ???? ????
2, ?? ?? ??:
index.php:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>圖形計(jì)算器</title>
<style>
* {
margin: 0px;
padding: 0px;
}
#contains {
width: 500px;
margin: 20px auto;
background: skyblue;
text-align: center;
}
h1 {
width: 500px;
height: 60px;
}
a {
font-size: 20px;
text-decoration: none;
}
#footer {
width: 300px;
background: #fff;
margin: 0 auto;
padding: 5px 10px;
border-radius: 150px;
}
</style>
</head>
<body>
<div id="contains">
<h1>簡(jiǎn)易圖形計(jì)算器</h1>
<a href='index.php?action=rect'>矩形</a> |
<a href='index.php?action=triangle'>三角形</a> |
<a href='index.php?action=cirle'>圓形</a> |
<a href='index.php?action=sphere'>球體</a>
<hr>
<?php
ini_set("display_errors", "On"); //開啟錯(cuò)誤調(diào)試
//設(shè)置錯(cuò)誤報(bào)告的級(jí)別，除了無(wú)關(guān)緊要的'注意'，其他的報(bào)告都輸出
error_reporting(E_ALL & ~E_NOTICE);
function __autoload($classname) { //魔術(shù)方法 自動(dòng)加載類
require "./$classname.class.php"; //將類名轉(zhuǎn)化成小寫
}
if (!empty($_GET['action'])) {
// echo "傳送成功";
$classname = ucfirst($_GET['action']);
$shape = new $classname($_POST);
$shape->view($_POST);
if (isset($_POST['sub'])) {
echo "<div id='footer'>";
if($shape->name!='球體'){
if ($shape->yan($_POST)) {
echo "<b>".$shape->name."的周長(zhǎng)".$shape->zhou()."</b>"."<br>";
echo "<br>";
echo "<b>".$shape->name."的面積".$shape->area()."</b>"."<br>";
}else {
echo "<b>錯(cuò)誤：$shape->error</b>";
}
echo "</div>";
}else{
if ($shape->yan($_POST)) {
echo "<b>".$shape->name."的表面積".$shape->area()."</b>"."<br>";
echo "<br>";
echo "<b>".$shape->name."的體積".$shape->zhou()."</b>"."<br>";
}else {
echo "<b>錯(cuò)誤：$shape->error</b>";
}
echo "</div>";
}
}
} else {
echo "請(qǐng)選擇一個(gè)圖形";
}
?>
</div>
</body>
</html> Shape.class.php:
Cirle.class.php:
<?php
abstract class Shape {
private $name;
private $error;
abstract function area();
abstract function zhou();
abstract function view($arr);
abstract function yan($arr);
}
?> Sphere.class.php:
<?php
class Rect extends Shape {
private $width;
private $height;
function __construct($arr = array()) {
if (!empty($arr)) {
$this->width = $arr['width'];
$this->height = $arr['height'];
}
$this->name = "矩形";
$this->error = '';
}
function area() {
return $this->width * $this->height;
}
function zhou() {
return ($this->width+$this->height) * 2;
}
function view($arr) {
$form='';
$form .= "<form action='index.php?action=rect' method='post'>";
$form .= "請(qǐng)輸入".$arr['name']."的寬度：<input type='text' name='width' value='".$_POST['width']."'/><br>";
$form .= "<br>";
$form .= "請(qǐng)輸入".$arr['name']."的長(zhǎng)度：<input type='text' name='height' value='".$_POST['height']."'/><br>";
$form .= "<br>";
$form .= "<input type='submit' name='sub' value='提交'/> ";
$form .= "<input type='reset' name='ret' value='重置'/>";
$form .= "</form>";
echo $form;
}
function yan($arr) {
$bz = true;
if ($arr['width']< 0) {
$this->error .= "寬度小于0；";
$bz = false;
} else {
if (!is_numeric($arr['width'])) {
$this->error .= "寬不是數(shù)字；";
$bz = false;
}
}
if ($arr['height']< 0) {
$this->error .= "寬度小于0；";
$bz = false;
} else {
if (!is_numeric($arr['height'])) {
$this->error .= "高不是數(shù)字；";
$bz = false;
}
}
return $bz;
}
}
?>
