executing remote php scripts consecutively

Question

I have a couple php scripts on remote web servers and I'm not sure how to create a local script that will execute those remote scripts consecutively (a delay between each one of a few seconds would be fine) and then proceed with the execution of the local php script (which analyzes the information gathered by the remote scripts).

At the moment I use iframes just to run the remote scripts, but I'd prefer not to.

I'm assuming I can use javascript to do this, but while I can program PHP/MySQL with some success - I'm lost when it comes to javascript.