将PHP文件转换为XML / ICS文件

I don't know if I am asking this at the right place or not but I have an interesting question.

So, my work schedule is connected to an XML file that feeds into a PHP file. I don't have access or can't find what the actual XML file is.

Here is where I am curious about some things. I would like to be able to either find that XML or find a way that I can create an XML file or ICS file from a php url. Does that make sense?

Basically, I would like to turn: http://rq4.myprimeportal.com/xml_employee_schedule.php?eid=7794

into an XML or ICS that I can use to grab my work schedule from. Is this possible?

Can I create a file that pulls the contents from that file into my own file?

I appreciate your help! I hope this all makes sense. Thank you!