Setting up PHPStorm PHP debugger - Help (Xampp installation on windows)


I need to set up my phpstorm debugger.
I am not familiar with the engine, so I am a little lost. To begin with , which one is easier to operate at this point :

xdebug, or zend?
What are features that does not exist in the other?

Reading up on how to install either of these debuggers, it seems that the version to be installed is heavily reliant on the version of PHP i am using. Looking at PHP info() , my current version is 5.6

However, on PHPStorm, under settings->PHP, looks like I am using 5.4 with no interpreter.

What does this mean? How can i possibly be using version 5.4 when the version installed is 5.6? Is it...emulated? And if so, which debugger version do i use?  
What will happen if I change these settings to 5.6 with 5.6.3 interpreter? What does the interpreter do?

Thanks for the help and explanation.
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John TsioumprisSoftware & Systems EngineerCommented:
It seems there is a detailed guide here
Also a vide guide here

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NeverEndingFlashStoriesAuthor Commented:
Thanks. I am on jetstorm's website, but completely different guide than what is showing up here. This is much better.
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