在PHP编程中,对象封装是一种常用的设计模式,它可以帮助我们将数据和操作数据的代码捆绑在一起,从而实现模块化和代码复用。以下是一个简单的实例,展示如何使用对象封装来处理一个图书管理系统中的图书类。
图书管理系统:对象封装实例
1. 定义图书类(Book.php)
```php

class Book {
private $title;
private $author;
private $isbn;
private $price;
public function __construct($title, $author, $isbn, $price) {
$this->title = $title;
$this->author = $author;
$this->isbn = $isbn;
$this->price = $price;
}
public function getTitle() {
return $this->title;
}
public function getAuthor() {
return $this->author;
}
public function getIsbn() {
return $this->isbn;
}
public function getPrice() {
return $this->price;
}
public function setTitle($title) {
$this->title = $title;
}
public function setAuthor($author) {
$this->author = $author;
}
public function setIsbn($isbn) {
$this->isbn = $isbn;
}
public function setPrice($price) {
$this->price = $price;
}
}
>
```
2. 使用图书类
```php
include 'Book.php';
// 创建图书对象
$book = new Book('PHP编程:从入门到实践', '作者A', '1234567890', 99.99);
// 获取图书信息
echo "


