Crons can be used to run scheduled jobs of your application. Crons are executed as www-data user. For further information how to schedule a cron, you may use https://crontab.guru/.

Please note that crons are not utilized any path variable. Commands are required to included full path like /usr/bin/php.

To create a cron job via PHP following commands are required:

<? file_put_contents('/tmp/crontab.txt', '* * * * * NEW_CRON'.PHP_EOL); echo exec('crontab /tmp/crontab.txt'); ?>

The commands can also be verwendent to edit the crontab or delete them.

To delete  the crontab following command can be used:

echo exec('crontab -r');

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