yii2 configure crontab scheduled tasks

1. Detection environment:

First we switch to the project root directory. If yii2 is installed normally, there will be a commands folder with a sample file HelloController.php in it.

<?php namespace app\commands;use yii\console\Controller;class HelloController extends Controller
{    public function actionIndex($message = &#39;hello world&#39;)
    {        echo $message . "\n";
    }
}

Cut to the project root directory, command line output php yii hello, output hello world indicating that the environment is normal

2. Write the code:

You can Create a new controller file in the commands folder, inherit yii\console\Controller; define class methods, the actionIndex method is generally the default route,

When debugging, enter php yii in the project root directory Add the controller name (lowercase)/route (can be omitted if index)

Third, Linux scheduled task crontab.

1About crontab:

##　In the linux environment, crontab -l displays scheduled tasks, crontab -e edits scheduled tasks

2 Basic syntax

Basic format: * * * command Time-sharing, day, month and week commands

The first column represents minutes 1 to 59. Each minute is represented by * or */1

The second column represents hours 1 to 23 (0 represents 0 o'clock)

The 3rd column represents the date 1~31
The 4th column represents the month 1~12
The 5th column identifies the weekday 0~6 (0 means Sunday)
The 6th column represents the command to be run

3 Usage examples

30 21 * * * /usr/local/etc/rc.d/lighttpd restart#　　 #The above example indicates that apache is restarted at 21:30 every night.

　45

4 1,10,22 * * /usr/local/etc/rc.d/lighttpd restart　　#The above example indicates that apache is restarted at 4:45 on the 1st, 10th, and 22nd of every month.

　10

1

* * 6 ,0 /usr/local/etc/rc.d/lighttpd restart #　　　#The above example represents 1 of every Saturday and Sunday : 10Restart apache.

　　0,30 18-23 * * * /usr/local/etc/rc.d/lighttpd restart

##　　　#The above example indicates that between 18:00 and 18:00 every day Restart apache every 30 minutes between 23:00.

　0

23 * * 6 /usr/local/etc/rc.d/lighttpd restart#　　 #The above example indicates that apache is restarted at 11:00 pm every Saturday.

　　0

*/1 * * * /usr/local/etc/rc.d/lighttpd restart ##　　#Restart apache every hour

Four, Linux scheduled task crontab executes the controller php file content under commands

Follow the third step and add php yii + project root path + routing ( Controller name/method name)

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