I am the webmaster of several websites (all sites are hosted in different domains but are the same PHP script + html + MySQL). No CPanel access, I'm not the sites owner, only the webmaster.
My job is login in the admin area several times a day at each site and change the information in a given field.
I do this manually every day of the year at all sites.
I need a PHP file that can automatically login to every site, diferent domains, usernames and passwords, (example: [url removed, login to view]) and once logged in, go to the page where is the field indicated that I need to change (example: [url removed, login to view]), overwriting the information in the field indicated in that page and update it.
My idea is a PHP solution so I can save it as a cron job on my web server to run as many times as I want automatically to every website. (In my webserver I have full access to CPanel so I can configure a cron job from there).