If you want to run PHP CLI command for Magento extension installs on a hosted environment like Freehostia.com, and don’t have access to SSH or composer, cron jobs can be really helpful.
I had to install an extension and then run setup:upgrade, but didn’t have time to go through composer so instead, I created a cron job and put the following commands in:
/usr/local/php7.4/bin/php /home/www/bootwindows.com/bin/magento setup:upgrade
/usr/local/php7.4/bin/php /home/www/bootwindows.com/bin/magento setup:di:compile
/usr/local/php7.4/bin/php /home/www/bootwindows.com/bin/magento setup:di:compile
Once the cron jobs have run, you can simply delete the jobs and your magento install would have been upgraded.