I've been beating my head against this for hours.
I've come back to do some work in PHPStorm after not having used it in a couple of weeks, and for some reason the debug doesn't work any more. It used to work, but now it doesn't and I have no idea what is going on.
I'm running on Windows, using IIS, PHP version 5.3.8. The XDebug is installed, and I've set the configuration in PHP.ini as per the usual instructions.
When I run phpinfo() everything looks normal (ie. XDebug is there).
I've rechecked various settings, downloaded a slightly newer version of XDebug than I was using (Xdebug v2.2.1), but nothing seems to kick it into life.
Can someone please give me some clues as to what I can look at next?
UPDATE:
I've spent a few more hours beating my head against this, and don't seem to have gotten much further. XDebug is installed and loaded, according to phpinfo(). I turned on logging, but it doesn't really tell me much except that XDebug is indeed connecting...
Log opened at 2013-02-17 04:13:07
I: Connecting to configured address/port: localhost:9000.
I: Connected to client. :-)
-> <init xmlns="urn:debugger_protocol_v1" xmlns:xdebug="http://xdebug.org/dbgp/xdebug" fileuri="file:///C:/web/dbg/index.php" language="PHP" protocol_version="1.0" appid="6912" idekey="PHPSTORM"><engine version="2.2.1"><![CDATA[Xdebug]]></engine><author><![CDATA[Derick Rethans]]></author><url><![CDATA[http://xdebug.org]]></url><copyright><![CDATA[Copyright (c) 2002-2012 by Derick Rethans]]></copyright></init>
-> <response xmlns="urn:debugger_protocol_v1" xmlns:xdebug="http://xdebug.org/dbgp/xdebug" status="stopping" reason="ok"></response>
Log closed at 2013-02-17 04:13:07
So it seems that the problem is on the PHPStorm side, but I cannot see where. I tried creating a very simple project, but could not get that to debug either.
Don't you hate it when you spend hours wrestling with something, then in desperation try something simple, and it works?
I decided to try a different port, 9001 instead of the default 9000, and it WORKED!
I now realise that I recently installed Twonky (for video streaming to my TV), and when I checked the settings, there it was... port 9000.