动态添加cron作业

Question

I want to add a cron job dynamically by storing the command in a text file and then using the exec command in my PHP code to run it.

My text file named cron.txt contains

*/5 * * * * /usr/local/bin/php -f public_html/bookmark/email.php

My relevant PHP code is

exec('crontab cron.txt', $a, $return);

When I run the code it the $return is set to error code 1 and no cron job is added. I have done this before without issues but I am missing something today!

Answer 1

确保Apache用户（例如“ www-data”）或以CLI身份运行脚本的用户具有cron.txt文件的权限。