How does the yii framework create scheduled tasks through console commands?

Assume that the Yii project path is /home/apps/ 1. Create the file /home/apps/protected/commands/crons.php

$yii = '/home/apps/framework/yii.php';
require_once($yii);
$configFile = dirname(__FILE__).'/../config/ console.php';
Yii::createConsoleApplication($configFile)->run();

2, create the required configuration file /home/apps/protected/config/console.php, configure The required components, database connections, logs and other information are in a format similar to the main configuration file main.php.

return array(
 'basePath'=>dirname(__FILE__).DIRECTORY_SEPARATOR.'..',
 'name'=>'Emergency',
 'import'=>array(
 'application.models.*',
 'application.components.*',
 'application.extensions.*',
 ),
 'components'=>array(
 'log '=>array(
 'class'=>'CLogRouter',
 'routes'=>array(
 array(
 'class'=>'CFileLogRoute',
 'levels'=>'info, warning, error',
 ),
 ),
 ),
 'db'=>array(
 'class'=>'application.extensions.PHPPDO.CPdoDbConnection',
 'pdoClass' => 'PHPPDO' ,
 'connectionString' => 'mysql:host=xxxx;dbname=xxx',
 'emulatePrepare' => true,
 'username' => 'xxx',
 'password' => 'xxx' ,
 'charset' => 'utf8',
 'tablePrefix' => 'tbl_',
 ),
 ),
 'params' => require('params. php'),
);

3, create a new TestCommand class under /home/apps/protected/commands/, inherit CConsoleCommand, in TestCommand, you can use the project configuration Information and various methods of Yii.

class TestCommand extends CConsoleCommand
{
 public function run()
 {
 ...
 }
}

4, create a scheduled task $crontab-e The content is: 1 * * * * /home/php/bin/php -f /home/apps/protected/commands/crons.php Test & That is, the contents of the TestCommand class are executed in the first minute of every hour. Similarly, other classes can be created under /home/apps/protected/commands/ and executed using the command line.

For the usage of crontab, please refer to:

• crontab command basics and examples
• Some examples of crontab commands
• Detailed explanation of Linux installation crontab
• crontab study notes
• Learn the crontab command to set up scheduled tasks in Linux
• crontab command format and examples
• Linux scheduled task setting crontab learning
• Good crontab tutorial