I posted about this a week or so ago but since then I've done some further troubleshooting so I thought it was worth posting again:
I'm trying to set up PHP debugging in Komodo 7, using the Xdebug extension that ships with Komodo. The extension seems to be working fine, and Komodo responds when I try and start a debug session.
However, Komodo doesn't let me step-through my PHP code; instead it just runs through the code in a pane in the bottom-right of the Komodo window.
For the record, I don't have any Mapped URIs.
I'd really appreciate any help anyone's able to offer on this as I've got a website I need to debug for a great non-profit and this problem is preventing me from working.
Use the debugger connection preferences to change the port that Komodo listens to from the default value of 9000 to a system provided free port, 8080, or whatever port your remote host or localhost is running.
In the end I ran this past Activestate's tech support on IRC (#Komodo on irc.mozilla.org) who were really helpful. We couldn't work out what the problem was, though, so I ended up uninstalling XAMPP and Komodo, reinstalling both, and then following the instructions in the Komodo docs.
来源：https://stackoverflow.com/questions/11632369/cant-get-php-debugging-to-work-with-komodo-but-im-almost-there