Develop scheduled task applications using Yii framework
Jun 21, 2023 pm 03:32 PM
With the development of the Internet, more and more applications need to implement scheduled tasks, such as message push, regular email sending, data cleaning, etc. In response to these needs, the Yii framework provides complete scheduled task support. This article will introduce how to use the Yii framework to develop scheduled task applications.
1. Introduction to Yii Framework
Yii (pronounced [yi?], meaning "Yes It Is!") is a high-performance PHP framework based on MVC (Model-View -Controller) design pattern development. The Yii framework has the advantages of simplicity, efficiency, security, and scalability, and is currently one of the most popular PHP frameworks.
The Yii framework provides a variety of components and tools that can be used to build different types of applications. Among them, the scheduled task component of the Yii framework can help developers implement various scheduled tasks, such as scheduled backup, scheduled cleanup, scheduled email sending, etc.
2. The scheduled task component of the Yii framework
The scheduled task component of the Yii framework is based on the CronTab system. CronTab is a time-based task scheduler that allows users to run at a specified time. command or script. The scheduled task component of the Yii framework supports a syntax similar to CronTab, which can be used to define various scheduled tasks.
In the Yii framework, you can obtain the scheduled task component instance through the following code:
$task = Yii::$app->task;
Through the above code, developers can access the scheduled task component of the Yii framework. Next, we will introduce how to use the scheduled task component to write a scheduled task application.
3. Yii framework scheduled task application example
Next, we will use an example to demonstrate how to use the Yii framework to develop a scheduled task application. This application is mainly used to clean expired data regularly.
- Create Yii Application
First, we need to create a Yii application. You can create a basic Yii application through the following command:
composer create-project --prefer-dist yiisoft/yii2-app-basic basic
This command will create an application based on the Yii framework. You can open http://localhost/basic in the browser to view the application. Effect.
- Add a scheduled task
Next, we need to add a scheduled task. You can edit the config/console.php file of the Yii application and add the following code:
return [
// ...
'components' => [
// ...
'task' => [
'class' => 'yiiconsolewidgetsSchedule',
'tasks' => [
// 每天凌晨2點(diǎn)清理1個(gè)月前的數(shù)據(jù)
[
'pattern' => '0 2 * * *',
'route' => ['clean', '-m1'],
],
],
],
],
// ...
];In the above code, we defined a scheduled task that will run at 2 a.m. every day and clean up 1 month ago The data. This task is implemented through the Yii framework's scheduled task component, which is defined based on the CronTab syntax.
Next, we need to define the command to clean the data. You can add the following code to the console/controllers/TaskController.php file:
<?php
namespace consolecontrollers;
use Yii;
use yiiconsoleController;
class TaskController extends Controller
{
public function actionClean($m = 1)
{
$targetTime = strtotime("-{$m} months");
$query = Todo::find()->where(['<', 'created_at', $targetTime]);
$count = $query->count();
$query->delete();
Yii::info("Cleaned up {$count} expired items.", 'task');
}
}In the above code, we define a clean action, which will delete all expired data 1 month ago. In this command, we use the query builder of the Yii framework to perform database operations, and also use the log component provided by the Yii framework to record the results of cleaning the data.
- Run scheduled tasks
Finally, we need to run scheduled tasks. You can start the Yii console application through the following command:
php yii scheduled/run
This command will start the Yii console application and run the scheduled task. During the running process, the system will determine whether the task needs to be executed based on the CronTab syntax. If the task needs to be executed, the specified command will be called to complete the task.
4. Summary
This article introduces how to use the Yii framework to develop scheduled task applications. Through the scheduled task component of the Yii framework, developers can easily implement the function of scheduled tasks, and at the same time, they can also write various scheduled task commands based on the powerful functions of the Yii framework.
In short, if you need to write a scheduled task application, you may consider using the Yii framework. I believe it will bring you a better development experience.
The above is the detailed content of Develop scheduled task applications using Yii framework. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
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)
Unable to save changes to Photos app error in Windows 11
Mar 04, 2024 am 09:34 AM
If you encounter the Unable to save changes error while using the Photos app for image editing in Windows 11, this article will provide you with solutions. Unable to save changes. An error occurred while saving. Please try again later. This problem usually occurs due to incorrect permission settings, file corruption, or system failure. So, we’ve done some deep research and compiled some of the most effective troubleshooting steps to help you resolve this issue and ensure you can continue to use the Microsoft Photos app seamlessly on your Windows 11 device. Fix Unable to Save Changes to Photos App Error in Windows 11 Many users have been talking about Microsoft Photos app error on different forums
How to connect Apple Vision Pro to PC
Apr 08, 2024 pm 09:01 PM
The Apple Vision Pro headset is not natively compatible with computers, so you must configure it to connect to a Windows computer. Since its launch, Apple Vision Pro has been a hit, and with its cutting-edge features and extensive operability, it's easy to see why. Although you can make some adjustments to it to suit your PC, and its functionality depends heavily on AppleOS, so its functionality will be limited. How do I connect AppleVisionPro to my computer? 1. Verify system requirements You need the latest version of Windows 11 (Custom PCs and Surface devices are not supported) Support 64-bit 2GHZ or faster fast processor High-performance GPU, most
How to solve application startup error 0xc000012d problem
Jan 02, 2024 pm 12:53 PM
When a friend's computer is missing certain files, the application cannot start normally with error code 0xc000012d. In fact, it can be solved by re-downloading the files and installing them. The application cannot start normally 0xc000012d: 1. First, the user needs to download ".netframework". 2. Then find the download address and download it to your computer. 3. Then double-click on the desktop to start running. 4. After the installation is completed, return to the wrong program location and open the program again.
Photos cannot open this file because the format is not supported or the file is corrupted
Feb 22, 2024 am 09:49 AM
In Windows, the Photos app is a convenient way to view and manage photos and videos. Through this application, users can easily access their multimedia files without installing additional software. However, sometimes users may encounter some problems, such as encountering a "This file cannot be opened because the format is not supported" error message when using the Photos app, or file corruption when trying to open photos or videos. This situation can be confusing and inconvenient for users, requiring some investigation and fixes to resolve the issues. Users see the following error when they try to open photos or videos on the Photos app. Sorry, Photos cannot open this file because the format is not currently supported, or the file
MS Paint not working properly in Windows 11
Mar 09, 2024 am 09:52 AM
Microsoft Paint not working in Windows 11/10? Well, this seems to be a common problem and we have some great solutions to fix it. Users have been complaining that when trying to use MSPaint, it doesn't work or open. Scrollbars in the app don't work, paste icons don't show up, crashes, etc. Luckily, we've collected some of the most effective troubleshooting methods to help you resolve issues with Microsoft Paint app. Why doesn't Microsoft Paint work? Some possible reasons why MSPaint is not working on Windows 11/10 PC are as follows: The security identifier is corrupted. hung system
Fix caa90019 Microsoft Teams error
Feb 19, 2024 pm 02:30 PM
Many users have been complaining about encountering error code caa90019 every time they try to log in using Microsoft Teams. Even though this is a convenient communication app, this mistake is very common. Fix Microsoft Teams Error: caa90019 In this case, the error message displayed by the system is: "Sorry, we are currently experiencing a problem." We have prepared a list of ultimate solutions that will help you resolve Microsoft Teams error caa90019. Preliminary steps Run as administrator Clear Microsoft Teams application cache Delete settings.json file Clear Microsoft from Credential Manager
Shazam app not working in iPhone: Fix
Jun 08, 2024 pm 12:36 PM
Having issues with the Shazam app on iPhone? Shazam helps you find songs by listening to them. However, if Shazam isn't working properly or doesn't recognize the song, you'll have to troubleshoot it manually. Repairing the Shazam app won't take long. So, without wasting any more time, follow the steps below to resolve issues with Shazam app. Fix 1 – Disable Bold Text Feature Bold text on iPhone may be the reason why Shazam is not working properly. Step 1 – You can only do this from your iPhone settings. So, open it. Step 2 – Next, open the “Display & Brightness” settings there. Step 3 – If you find that “Bold Text” is enabled
High CPU usage of Feature Access Manager service in Windows 11
Feb 19, 2024 pm 03:06 PM
Some PC users and gamers may experience abnormally high CPU usage when using Windows 11 or Windows 10, especially when running certain applications or games. This article provides some suggestions to help users alleviate this problem. Some affected PC users noted that when experiencing this issue, they observed Task Manager showing other applications using only 0% to 5% of the CPU, while the Service Host: Capability Access Manager service was seeing usage as high as 80%. % to 100%. What is the Service Host: Feature Access Manager service? The function of the Function Access Manager service is to confirm whether the application has permission to access the camera and microphone and grant the necessary permissions. It facilitates the management of UWP applications
