国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂

PHP 滿載

Jun 13, 2016 pm 12:08 PM
echo gt school this

PHP 重載

PHP 重載一個(gè)類中的方法與另一個(gè)方法同名,但是參數(shù)不同,這種方法稱之為重載方法。很遺憾因?yàn)?PHP 是弱類型的語(yǔ)言, 所以在方法的參數(shù)中本身就可以接收不同類型的數(shù)據(jù),又因?yàn)?PHP 的方法可以接收不定個(gè)數(shù)的參數(shù),所以在 PHP 里面沒(méi)有嚴(yán)格意義上的方法重載。PHP 中的重載是指在子類里面定義了一個(gè)和父類同名的方法,且該方法將在子類中將把父類的方法覆蓋。在子類中,因?yàn)閺母割惱^承過(guò)來(lái)的方法可能無(wú)法訪問(wèn)子類定義的屬性或方法,所以有時(shí)候重載是必要的。例子:<?phpclass Person {    var $name;    var $age;    function say() {        echo "我的名字叫:".$this->name."<br>";	echo "我的年齡是:".$this->age;    }}// 類的繼承class Student extends Person {    var $school;    //學(xué)生所在學(xué)校的屬性	    function say() {        echo "我的名字叫:".$this->name."<br>";        echo "我的年齡是:".$this->age."<br>";        echo "我正在".$this->school."學(xué)習(xí)";    }	}$t1 = new Student();$t1->name = "張三";$t1->age = "18";$t1->school = "人民大學(xué)";$t1->say();?>運(yùn)行該例子,輸出:我的名子叫:張三我的年齡是:18我正在人民大學(xué)學(xué)習(xí)提示如果父類定義方法時(shí)使用了 final 關(guān)鍵字,則不允許被子類方法覆蓋。訪問(wèn)父類被覆蓋的方法可以通過(guò) :: 符號(hào)來(lái)訪問(wèn)父類被覆蓋的方法或成員屬性:function say() {    parent::say();    //或者    Person::say();    echo "我在".$this->school."上學(xué)<br>";
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undress AI Tool

Undress AI Tool

Undress images for free

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

What are the differences between Huawei GT3 Pro and GT4? What are the differences between Huawei GT3 Pro and GT4? Dec 29, 2023 pm 02:27 PM

Many users will choose the Huawei brand when choosing smart watches. Among them, Huawei GT3pro and GT4 are very popular choices. Many users are curious about the difference between Huawei GT3pro and GT4. Let’s introduce the two to you. . What are the differences between Huawei GT3pro and GT4? 1. Appearance GT4: 46mm and 41mm, the material is glass mirror + stainless steel body + high-resolution fiber back shell. GT3pro: 46.6mm and 42.9mm, the material is sapphire glass + titanium body/ceramic body + ceramic back shell 2. Healthy GT4: Using the latest Huawei Truseen5.5+ algorithm, the results will be more accurate. GT3pro: Added ECG electrocardiogram and blood vessel and safety

Fix: Snipping tool not working in Windows 11 Fix: Snipping tool not working in Windows 11 Aug 24, 2023 am 09:48 AM

Why Snipping Tool Not Working on Windows 11 Understanding the root cause of the problem can help find the right solution. Here are the top reasons why the Snipping Tool might not be working properly: Focus Assistant is On: This prevents the Snipping Tool from opening. Corrupted application: If the snipping tool crashes on launch, it might be corrupted. Outdated graphics drivers: Incompatible drivers may interfere with the snipping tool. Interference from other applications: Other running applications may conflict with the Snipping Tool. Certificate has expired: An error during the upgrade process may cause this issu simple solution. These are suitable for most users and do not require any special technical knowledge. 1. Update Windows and Microsoft Store apps

Deal | Affordable HP Victus gaming laptop with RTX 3050-beating RX 6550M gets 40% discount in Best Buy sale Deal | Affordable HP Victus gaming laptop with RTX 3050-beating RX 6550M gets 40% discount in Best Buy sale Aug 09, 2024 pm 09:51 PM

The HP Victus 15 is 1 15.6-inch entry-level gaming laptop that ordinarily wouldn't be worth much consideration, however a new Best Buy deal offers 40% off the entry-level gaming laptop, bringing the price down from $799.99 to a very budget-friendly $

What are the most popular golang frameworks on the market? What are the most popular golang frameworks on the market? Jun 01, 2024 pm 08:05 PM

The most popular Go frameworks at present are: Gin: lightweight, high-performance web framework, simple and easy to use. Echo: A fast, highly customizable web framework that provides high-performance routing and middleware. GorillaMux: A fast and flexible multiplexer that provides advanced routing configuration options. Fiber: A performance-optimized, high-performance web framework that handles high concurrent requests. Martini: A modular web framework with object-oriented design that provides a rich feature set.

Five selected Go language open source projects to take you to explore the technology world Five selected Go language open source projects to take you to explore the technology world Jan 30, 2024 am 09:08 AM

In today's era of rapid technological development, programming languages ??are springing up like mushrooms after a rain. One of the languages ??that has attracted much attention is the Go language, which is loved by many developers for its simplicity, efficiency, concurrency safety and other features. The Go language is known for its strong ecosystem with many excellent open source projects. This article will introduce five selected Go language open source projects and lead readers to explore the world of Go language open source projects. KubernetesKubernetes is an open source container orchestration engine for automated

Laravel development: How to implement WebSockets communication using Laravel Echo and Pusher? Laravel development: How to implement WebSockets communication using Laravel Echo and Pusher? Jun 13, 2023 pm 05:01 PM

Laravel is a popular PHP framework that is highly scalable and efficient. It provides many powerful tools and libraries that allow developers to quickly build high-quality web applications. Among them, LaravelEcho and Pusher are two very important tools through which WebSockets communication can be easily implemented. This article will detail how to use these two tools in Laravel applications. What are WebSockets? WebSockets

Go language development essentials: 5 popular framework recommendations Go language development essentials: 5 popular framework recommendations Mar 24, 2024 pm 01:15 PM

&quot;Go Language Development Essentials: 5 Popular Framework Recommendations&quot; As a fast and efficient programming language, Go language is favored by more and more developers. In order to improve development efficiency and optimize code structure, many developers choose to use frameworks to quickly build applications. In the world of Go language, there are many excellent frameworks to choose from. This article will introduce 5 popular Go language frameworks and provide specific code examples to help readers better understand and use these frameworks. 1.GinGin is a lightweight web framework with fast

Detailed explanation of the role and usage of the echo keyword in PHP Detailed explanation of the role and usage of the echo keyword in PHP Jun 28, 2023 pm 08:12 PM

Detailed explanation of the role and usage of the echo keyword in PHP PHP is a widely used server-side scripting language, which is widely used in web development. The echo keyword is a method used to output content in PHP. This article will introduce in detail the function and use of the echo keyword. Function: The main function of the echo keyword is to output content to the browser. In web development, we need to dynamically present data to the front-end page. At this time, we can use the echo keyword to output the data to the page. e

See all articles