PHP从零开始-笔记-面向对象编程的概念

时间:2023-03-09 22:08:56
PHP从零开始-笔记-面向对象编程的概念

面向对象变成的概念

需要一一种不同的方式来考虑如何构造应用程序。通过对象可以在对应用程序所处理的显示任务、过程和思想进行编码是,实施更贴切的建模。OOP方法并不是将应用程序考虑成一个将大量数据从一个函数传递给下一个函数的控制线程,而是允许将应用程序建模成一组相互协作的对象,并且这些对象可以独立的处理某些活动。

吐槽:和js挺像的

OPP的优点

可以轻松地将单个的业务需求转换为单个的代码模块。

代码重用

类的模块化

吐槽:以后问OPP的优点就这样了

opp的组成

类(class)一个对象的“蓝本”,包含定义属性和方法的实际代码

对象(object)某个类的运行实例,包含应用程序运行所需要的所有内容数据和状态信息

继承(inheritance)可以定义一种类型类为不同类型类的子类型的能力(类似于正方形是一种矩形)

多态(polymorphism)允许一个类定义为多个类范畴的成员(例如,轿车是“有引擎的食物”以及“有*的事物”)

接口(interface)是指这样一种做法:设定对象能够做什么,而不具体定义这些功能(如:狗和人都是“可以行走的事物”,但是行走的方式有很大的不同)

封装(encapsulation)对象就起内部数据的访问进行保护的能力

吐槽:背熟吧,骚年

然后下面开始撸代码了

创建类

<?php
class Demo{ function sayHello($name){
print"Hello $name";
}
}
?>

添加方法

<?php
require_once('class.demo.php');
$objDemo=new Demo();
$objDemo->sayHello('white') ?>

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" alt="" />

添加属性

<?php
class Demo{
public $name;
function sayHello(){
print "Hello $this->name!";
}
}
?>
<?php
require_once('class.demo.php');
$objDemo=new Demo();
$objDemo->name = 'white'; $obj1Demo=new Demo();
$obj1Demo->name = 'black';
$objDemo->sayHello();
$obj1Demo->sayHello();
?>

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" alt="" />

保护对成员变量的访问

可以将name属性的值设置为任意所需的数据-包括对象、整数数组、文件句柄或任何其他没有意义的值。但是,并不能再设置name属性时执行任何形式的数据验证或更新任何其他的值。

为了解决这个问题,必须以get[property]和set[property name]的函数形式来实现属性。这些函数称为存取器方法

<?php
class Demo{
private $_name;
public function sayHello(){
print "Hello" . $this->getName() . "!";
}
public function getName(){
return $this->_name;
}
public function setName($name){
if(!is_string($name) || strlen($name)==0){
throw new Exception("Invalid name value!");
}
$this->_name=$name;
}
}
?>
<?php
require_once('class.demo.php');
$objDemo=new Demo();
$objDemo->setName('white');
$objDemo->sayHello();
$objDemo->setName(37);
?>

name属性的成员访问级别由Public变成private,并且怎家了一个下划线作为前缀。下划线是建议的命名约定,表明私有的成员变量和函数;

私有的内部成员变量不能从类的外部访问。由于不能直接访问这些变量,因此必须要getName()和setName()存取器方法获得这些信息,从而确保类可以在允许设置值之前检查该值。。。

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" alt="" />

成员变量或方法可以有3个不同级别的可见性:公有的、私有的和受保护的。

公有成员可以任意的代码访问。

私有成员只有类自身可以访问。这些成员通常用于类的内部处理买并且可能诸如注入某个数据库连接句柄活配置信息之类的内容。

受保护的成员可以由类自身以及从该类继承的类使用

初始化对象

对于许多将要创建的类,需要在初次实例化该类的对象时执行一些特殊的设置。例如,可能需要从数据库中获取某些信息,或者是初始化某些属性值。通过创建一个称为构造函数的特殊方法可以执行实例化对象所需要的任何活动,改方法在PHP中是通过名为_construct()的函数来实现的。在实例化对象时,PHP将自动调用这个特殊的函数

<?php
class Demo{
private $_name;
public function _construct($name){
$this->name = $name;
}
function sayHello(){
print "Hello $this->name!";
} }
?>
<?php
require_once('class.demo.php');
$objDemo=new Demo();
$objDemo->_construct('white');
$objDemo->sayHello();
?>