>这是一个基本示例:
>此代码定义具有属性<?php class Dog { public $name; public $breed; public function __construct($name, $breed) { $this->name = $name; $this->breed = $breed; } public function bark() { echo "Woof! My name is " . $this->name . ".\n"; } } // Create an object (instance) of the Dog class $myDog = new Dog("Buddy", "Golden Retriever"); // Access properties and methods echo $myDog->name . " is a " . $myDog->breed . ".\n"; $myDog->bark(); ?>
的A Dog
类,以及方法name
>。 breed
方法是一种特殊的构造函数,当创建新的bark()
对象时,它会自动调用。 然后,我们创建一个对象__construct()
并访问其属性和方法。 请注意,Dog
的使用来参考当前对象的属性和类中的方法。 Visibility modifiers like $myDog
, $this
, and public
control access to class members.private
protected
What are the key differences between classes and objects in PHP 7?
public
,private
,protected
,extends
senasinance:<?php class Dog { public $name; public $breed; public function __construct($name, $breed) { $this->name = $name; $this->breed = $breed; } public function bark() { echo "Woof! My name is " . $this->name . ".\n"; } } // Create an object (instance) of the Dog class $myDog = new Dog("Buddy", "Golden Retriever"); // Access properties and methods echo $myDog->name . " is a " . $myDog->breed . ".\n"; $myDog->bark(); ?>
>在创建php 7?
public
>成员应用于保护内部数据。private
protected
private
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