search
HomeBackend DevelopmentPHP Tutorialthinkphp引入一个公共类,如何在其他方法里面不需要再实例化调用

thinkphp引入一个公共类,如何在其他方法里面不需要再实例化调用

<?phpnamespace Index\Controller;use Think\Controller;use Com\Wechat;class WuyeController extends CheckController {   protected function _initialize(){ 		$token = 'weixin'; //微信后台填写的TOKEN 		$wechat = new Wechat($token); 	} 	public function index(){		 $weObj->text("hello, I'm wechat")->reply();		 //在这里不能调用上面实例化的类		 //如何操作才可以使用	 }	    public function test(){		 $weObj->text("hello, I'm wechat")->reply();		 //在这里不能调用上面实例化的类		 //如何操作才可以使用    }}





回复讨论(解决方案)

这就是个类  创建一个public 的变量....

怎么创建呢,我都试过好像不能继承

class WuyeController extends CheckController {   protected $wechat;   protected function _initialize(){         $token = 'weixin'; //微信后台填写的TOKEN         $this->wechat = new Wechat($token);     }     public function index(){         $this->weObj->text("hello, I'm wechat")->reply();     }          public function test(){         $this->weObj->text("hello, I'm wechat")->reply();    }}

谢谢回复,但是还是不行,提示Call to a member function text() on a non-object

那就是没有实例化成功

我用的类库是这个

https://github.com/dodgepudding/wechat-php-sdk

你的类库文件放在哪里,需要引入文件再试试,import  or vendor。

类库是正确的,我在_initialize是可以正确引用的,但是放在其他方法里就不能引用

把初始化方法的protected  改为  public,然后按照三楼写的就对了

在 wechat-php-sdk-master 项目中没有找到 CheckController 类定义
也没找到 _initialize 方法的定义

你能确认 _initialize 在类实例化时就执行了吗?

token 作为身份认证,通常是动态发放的,你写死了可以吗?

_initialize 里可以直接用该类了
token 只是该类的一个参数,不加都可以,但是为什么在tp里面不能用呢

我看到了一个wechat和一个weobj...

<?phpnamespace Index\Controller;use Think\Controller;use Com\Wechat; class WuyeController extends CheckController {      protected $weObj;   protected function _initialize(){         $token = 'weixin'; //微信后台填写的TOKEN         $this->weObj = new Wechat($token);     }     public function index(){         $this->weObj->text("hello, I'm wechat")->reply();         //在这里不能调用上面实例化的类         //如何操作才可以使用     }          public function test(){         $this->weObj->text("hello, I'm wechat")->reply();         //在这里不能调用上面实例化的类         //如何操作才可以使用     } }

Statement
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
The Continued Use of PHP: Reasons for Its EnduranceThe Continued Use of PHP: Reasons for Its EnduranceApr 19, 2025 am 12:23 AM

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python: Exploring Their Similarities and DifferencesPHP and Python: Exploring Their Similarities and DifferencesApr 19, 2025 am 12:21 AM

PHP and Python are both high-level programming languages ​​that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP and Python: Different Paradigms ExplainedPHP and Python: Different Paradigms ExplainedApr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP and Python: A Deep Dive into Their HistoryPHP and Python: A Deep Dive into Their HistoryApr 18, 2025 am 12:25 AM

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

Choosing Between PHP and Python: A GuideChoosing Between PHP and Python: A GuideApr 18, 2025 am 12:24 AM

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP and Frameworks: Modernizing the LanguagePHP and Frameworks: Modernizing the LanguageApr 18, 2025 am 12:14 AM

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHP's Impact: Web Development and BeyondPHP's Impact: Web Development and BeyondApr 18, 2025 am 12:10 AM

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

How does PHP type hinting work, including scalar types, return types, union types, and nullable types?How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AM

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values ​​and handle functions that may return null values.

See all articles

Hot AI Tools

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.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Tools

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function