类成员默认访问标识符是什么解决办法
类成员默认访问标识符是什么
- PHP code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ --> class Person { var $name; protected $id; private $hidden; public $username; }
请问上述代码中的$name类成员变量是什么访问控制?(它后面三个变量依次是protected private public。)
------解决方案--------------------
默认是pubilc
但为了让大家养成良好的习惯和今后对PHP6的适应,建议使用 public 而不是 var
------解决方案--------------------
如果你不声明 那么他就是 public

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Every year before Apple releases a new major version of iOS and macOS, users can download the beta version several months in advance and experience it first. Since the software is used by both the public and developers, Apple has launched developer and public versions, which are public beta versions of the developer beta version, for both. What is the difference between the developer version and the public version of iOS? Literally speaking, the developer version is a developer test version, and the public version is a public test version. The developer version and the public version target different audiences. The developer version is used by Apple for testing by developers. You need an Apple developer account to download and upgrade it.

In Java, private means "private" and is an access control modifier used to modify classes, properties and methods. Class members modified with private can only be accessed and modified by the methods of the class itself, and cannot be accessed and referenced by any other class (including subclasses of the class); therefore, the private modifier has the highest level of protection.

The role and examples of var keyword in PHP In PHP, the var keyword is used to declare a variable. In previous PHP versions, using the var keyword was the idiomatic way to declare member variables, but its use is no longer recommended. However, in some cases, the var keyword is still used. The var keyword is mainly used to declare a local variable, and the variable will automatically be marked as local scope. This means that the variable is only visible within the current block of code and cannot be accessed in other functions or blocks of code. Use var

Audio output and input require specific drivers and services to work as expected on Windows 11. These sometimes end up running into errors in the background, causing audio issues like no audio output, missing audio devices, distorted audio, etc. How to Fix Audio Service Not Responding on Windows 11 We recommend you to start with the fixes mentioned below and work your way through the list until you manage to resolve your issue. The audio service may become unresponsive for a number of reasons on Windows 11. This list will help you verify and fix most issues that prevent audio services from responding on Windows 11. Please follow the relevant sections below to help you through the process. Method 1: Restart the audio service. You may encounter

This article brings you relevant knowledge about JavaScript. It mainly introduces the differences between var, let and const, as well as the relationship between ECMAScript and JavaScript. Interested friends can take a look at it. I hope Helpful to everyone.

Private is a Java access modifier that limits the accessibility of a function to only the class in which it is defined, including: the function cannot be accessed in other classes. The function is also not accessible in subclasses.

No, we cannot declare top-level classes as private or protected. It can be public or default (no modifiers). If there are no modifiers, there should be default access. Syntax //Atoplevelclass publicclassTopLevelClassTest{ //Classbody} If a top-level class is declared as private, the compiler will report an error, prompting "The modifier private is not allowed here." This means that top-level classes cannot be private, the same applies to protected access

The reason for the error message indicates that in the python code, an object (represented by the self variable) is used, but the object does not have an attribute named k. This may be because the object does not have this property defined, or a type error in the code causes the object to not be of the expected type. How to Fix To resolve this error, you may need to do one or more of the following: Check your code for the error and make sure the object referenced by the self variable has a property named k. Check your code for type errors and make sure the object referenced by the self variable is of the expected type. If the attribute is missing, you need to define this attribute in the class and use tryexcept to get this error. If you are sure that k is an attribute that is not defined in the class, please confirm
