ThinkPHP验证码使用简明教程
一、首先需要在控制器中加入验证码方法admin/Lib/Action/LoginAction.class.php
知识点:
1、ob_clean函数用途
2、import方法调用think默认类库
3、Image类buildImageVerify方法使用
代码如下:
复制代码 代码如下:
Public function verify(){
ob_clean();
//ob_clean函数 清空先前输出
import('ORG.Util.Image');
//import调用的是message/ThinkPHP框架目录下的扩展包Extend/Library/ORG/Util/中的Image.class.php类文件
Image::buildImageVerify();
//调用buildImageVerify方法生成验证码,默认参数为($length=4, $mode=1, $type='png', $width=48, $height=22, $verifyName='verify'),有兴趣的朋友可以研究下Image类
}
二、在模板文件中加入验证码模块admin/Tpl/Login/index.html
知识点:
1、验证码图片调用
2、js相关运行流程了解
3、__PUBLIC__常量
在密码输入框后加入如下代码:
复制代码 代码如下:
//__PUBLIC__常量可以在页面加载后,“查看页面源文件”中找到定义的__PUBLIC__目录,默认为项目根目录message下的Public目录,下面会讲解如何自定义__PUBLIC__系统常量
//jquery文件,只有加载了这个文件才可以调用jquery的方法
//这里的具体代码会在下面贴出,其实只是定义了一个change_code函数,也就是更换验证码的异步操作(可以在不刷新页面的情况下更换)
login.js文件在message/Public/目录下
文件内容如下:
复制代码 代码如下:
verifyURL = 'http://localhost/message/admin.php/Login/verify';
//定义验证码路径
function change_code(obj){
$("#code").attr("src",verifyURL+'/'+Math.random());
//动态生成验证码方法,有兴趣的朋友可以深入研究下jq方法
return false;
}
另:__PUBLIC__文件定义在message/admin/Conf/config.php
在配置中,加入如下内容,即可改变__PUBLIC__路径
配置如下:
复制代码 代码如下:
//常量相关配置
'TMPL_PARSE_STRING' => array(
'__PUBLIC__' => __ROOT__ . '/' . APP_NAME . '/Public',
//路径改变为message/admin/Public,刷新页面,验证码依然可以刷新,则表明js生效,也可“查看页面源文件”
),

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To run the ThinkPHP project, you need to: install Composer; use Composer to create the project; enter the project directory and execute php bin/console serve; visit http://localhost:8000 to view the welcome page.

ThinkPHP has multiple versions designed for different PHP versions. Major versions include 3.2, 5.0, 5.1, and 6.0, while minor versions are used to fix bugs and provide new features. The latest stable version is ThinkPHP 6.0.16. When choosing a version, consider the PHP version, feature requirements, and community support. It is recommended to use the latest stable version for best performance and support.

Steps to run ThinkPHP Framework locally: Download and unzip ThinkPHP Framework to a local directory. Create a virtual host (optional) pointing to the ThinkPHP root directory. Configure database connection parameters. Start the web server. Initialize the ThinkPHP application. Access the ThinkPHP application URL and run it.

Performance comparison of Laravel and ThinkPHP frameworks: ThinkPHP generally performs better than Laravel, focusing on optimization and caching. Laravel performs well, but for complex applications, ThinkPHP may be a better fit.

"Development Suggestions: How to Use the ThinkPHP Framework to Implement Asynchronous Tasks" With the rapid development of Internet technology, Web applications have increasingly higher requirements for handling a large number of concurrent requests and complex business logic. In order to improve system performance and user experience, developers often consider using asynchronous tasks to perform some time-consuming operations, such as sending emails, processing file uploads, generating reports, etc. In the field of PHP, the ThinkPHP framework, as a popular development framework, provides some convenient ways to implement asynchronous tasks.

ThinkPHP installation steps: Prepare PHP, Composer, and MySQL environments. Create projects using Composer. Install the ThinkPHP framework and dependencies. Configure database connection. Generate application code. Launch the application and visit http://localhost:8000.

ThinkPHP is a high-performance PHP framework with advantages such as caching mechanism, code optimization, parallel processing and database optimization. Official performance tests show that it can handle more than 10,000 requests per second and is widely used in large-scale websites and enterprise systems such as JD.com and Ctrip in actual applications.

Development suggestions: How to use the ThinkPHP framework for API development. With the continuous development of the Internet, the importance of API (Application Programming Interface) has become increasingly prominent. API is a bridge for communication between different applications. It can realize data sharing, function calling and other operations, and provides developers with a relatively simple and fast development method. As an excellent PHP development framework, the ThinkPHP framework is efficient, scalable and easy to use.
