Is it possible to monitor connections from a php script?

I have a script that I purchased from a company. And in the script there is encoded files. In those files there are bits of code that use fopen() to send data to an external website. I need to know if there is any way to monitor what is sent out.

The reason is I, along with many other script owners are concerned about the company, and the way they do business. Before the sale, they're nice and professional. After... well... here I am.

So, I need to make sure that this company is not getting info they shouldn't have. Like database stuff... or passwords... etc.

This particular site is on a shared host, but dedicated ip...

Is there any tools I can use to see the data being sent out from any script file located in one folder in the site? A common server tool?

Any info would be highly appreciated.

Thank you

 

Which file is being opened?

I think the best way is to study the code to see what is sent.

 

The files are encoded... or I would have gone through every line of code and removed the garbage they put it.