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This article mainly introduces the CentOS7 implementation of PHP timing task method example, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

1. CentOS 7 install crontab:

Yum install crontabs

Syntax:

Crontab [- u] [configuration file] or crontab [- u] [- elr]

Parameters:

-e edit the timer settings for the user.

-l lists the timer settings for the user.

-r removes the timer setting for the user.

-u specifies the name of the user to set the timer.

For more information on how to use the Crontab command, please refer to this article: https://www.jb51.net/article/148575.htm

1. On the command line, enter:

Crontab-e

Then add the corresponding task, wq save and exit

2. Find the php execution directory:

Which php

3. Execute script format

* / usr/local/php/bin/php / var/www/aaa.php

4. Service status

Systemctl start crond.servicesystemctl stop crond.servicesystemctl restart crond.servicesystemctl reload crond.servicesystemctl enable crond.service # # set cron boot crontab-l # # View current croncrontab-e # # Edit current croncrontab-r # # Delete current cron

II. Practical examples

Parameter description

Minute: the minute of each hour to execute the task. Value range: 0-59.

Hour: the number of hours of the day to perform the task. Value range: 0-23.

Day: perform this task on the day of each month. Value range: 1-31.

Month: the month in which the task is performed, with a value range of 1-12

DayOfWeek: the day on which the task is performed each week. The value range is 0-6. 0 indicates the weekend.

CommandPath: specify the path of the program to be executed

3021 * / etc/init.d/nginx restart # # restart nginx at 21:30 every night. Restart nginx at 4: 45 on the 1st, 10th and 22nd of each month at 4: 45 etc/init.d/nginx restart. 10 1 * * 6 nginx / etc/init.d/nginx restart # # restart nginx every Saturday and Sunday at 1: 10. 0pr 30 18-23 * / etc/init.d/nginx restart # # restart nginx every 30 minutes between 18: 00 and 23: 00 every day. 023 * * 6 / etc/init.d/nginx restart # # restart nginx every Saturday at 11: 00 pm. * * / 1 * / etc/init.d/nginx restart # # restart nginx* 23-7 etc/init.d/nginx restart 1 * / etc/init.d/nginx restart # # every hour between 11:00 and 7am Restart nginx0 11 4 * mon-wed / etc/init.d/nginx restart # # every other hour and restart nginx0 4 1 jan * / etc/init.d/nginx restart # # at 11:00 every Monday to Wednesday. Restart nginx*/30 * / usr/sbin/ntpdate 210.72.145.20 # # every half hour. Thank you for reading this article carefully. I hope the article "how CentOS7 performs PHP scheduled tasks" shared by the editor is helpful to everyone. At the same time, I also hope you can support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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