GravityForms Autosubmit Script

I need you to develop some software for me. I would like this software to be developed using PHP. I am looking for a function for GravityForms that allows for a GET parameter of “autosubmit” with value of “true” to automatically submit the form rather than being forced to hit the submit button. Basically, the moment I visit a website such as “[login to view URL]” it will submit whatever is inside the form. I want this to be in the [login to view URL] file so even if GravityForms upgrades, it won’t stop the custom program from working.