This is useful when you have to run multiple maintenance tasks on a cron in a server
Set up the cron :
0 4 * * 1-4 /usr/bin/php-7.0 /home/www-data/___scripts/nightly/index.php 1>> /home/www-data/___scripts/nightly/logs/debug.log 2>> /home/www-data/___scripts/nightly/logs/error.log
You can add new tasks in the task folders, every task goes into one php file.
Every php file inside tasks will be picked up and run by the index.php file.