Do I need xdebug for xampp?

[webmaster1]

I have a general idea of what it does but is it an optional install or is it required?

 

Can anyone explain to me what this instruction means:

I would recommend putting the downloaded DLL into PHP's extension directory

 

I 'm not sure what to pick from the download page:

http://www.xdebug.org/download.php

 

Should I simply download the most recent source link?

[webmaster1]

Sorted! The xdebug website actually finds the dll when you paste in your phpinfo(): http://www.xdebug.org/find-binary.php