Integrated development plattforms (IDEs) like Eclipse or Netbeans do get more popular these days. One cause might be the beautiful benefits a developer gains from using an IDE like a type history or a code completion. This talk shall enable the attendee to get knowleadge about the possibilites of Eclipse PDT to use xDebug as internal debugger It shows howto install xDebug and give a deep introduction about how to enable Eclipse PDT version 2 to communicate with xDebug. Another topic of this talk would be the different debugging mechanism Eclipse PDT provides and how they work.

1. Debugging PHP
with
Xdebug
Inside of
Eclipse PDT 2.0
Bastian Feder IPC 2009
papaya Software GmbH 18.11.2009

2. Me, myself & I
 Application developer
 PHP since 2001
 @papaya since
01.2008
 OpenSource addict
▹ fluentDom.org
▹ CaricaCacheGrind

3. Who are you?

4. Derrick Rethans
„ Xdebug ̶
PHP developer's Swiss-Army Knife “

5. What is this xDebug ev'ryone's talking about?
 Debugging for PHP by Derick Rethans
(http://www.xdebug.org)
 Provides
▹ profiling, tracing, code coverage, …
▹ PHP error reporting enhancements
 Cross platform

6. What's up for this talk?
 Installation
 Configuration
 Techniques
 Eclipse PDT
 Troubleshooting

7. Obtaining Xdebug - Linux
#> sudo apt-get install php5-xdebug ↵
#> php -v ↵
PHP 5.2.-3ubuntu4.2 with Suhoshin-Patch 0.9.6.2 (cli)
Copyright © 1997-2008 The PHP Group
Zend Engine v2.2.0, Copyright © 2002-2008 Zend Technologies
with Xdebug v2.0.5, Copyright © 2002-2008, by Derick Rethans
 Easiest way on Linux systems
 Basic configuration

8. Obtaining Xdebug - PECL
#> sudo pecl install xdebug ↵
 Still configurations to be done
▹ Add:
zend_extension=“/usr/local/php/modules/xdebug.so
to php.ini
 Ignore notes about to add
„extension=xdebug.so“ → causes problems

9. Obtaining Xdebug – precompiled Modules
 ActiveState
▹ Komodo IDE Xdebug binaries
(http://downloads.activestate.com/Komodo/releases/5.2.2/remotedebugging)

10. Configuration
 Add to php.ini
[XDebug]
;; Only Zend OR (!) XDebug
zend_extension="/usr/local/php/modules/xdebug.so"
xdebug.remote_enable=true
xdebug.remote_host=127.0.0.1 ;if debugging on remote server, put client IP here
xdebug.remote_port=9000
xdebug.remote_handler=dbgp
;; profiler
xdebug.profiler_enable=Off
xdebug.profiler_enable_trigger=On
xdebug.profiler_output_dir=/data_lokal/temp/xdebug/profiling

11. Configuration (II)
 .htaccess – file settings
#-------------------------------#
# xDebug section #
#-------------------------------#
php_value xdebug.remote_enable 1
php_value xdebug.remote_handler bdgp
dbgp
php_value xdebug.remote_host 127.0.0.1 ;if debugging on remote server, put client IP here
php_value xdebug.allowed_clients <client IP address>
php_value xdebug.remote_port 9000
# profiler
php_value xdebug.profiler_enable_trigger 1
php_value xdebug.profiler_enable 0
php_value xdebug.profiler_output_dir "/data_lokal/temp/xdebug/profiling"

12. Debugging techniques
 Local debugging

13. Debugging techniques (II)
 Remote debugging

14. Debugging techniques (III)
 Multi-User Debugging
▹ Only possible using Remote Debugging
▹ DBGp Proxy necessary

15. Eclipse PDT

16. Eclipse PDT
 Debug Perspective
 Debug Views
 Support for
▹ Breakpoints
▹ Conditional Breakpoints
▹ Live view / edit of variable content
▹ All debugging techniques

17. Debugging perspective

18. Preferences – Basic setup

19. General settings
 Debug Port
 Multisession
 DBGp Proxy settings

20. Preferences – Basic setup

21. Preferences – PHP servers
 Remote debugging
 Mapping between IDE and Xdebug

22. Configuration for remote debugging

23. Start a remote debugging session

24. Start a local debugging

25. Configure „autostart“ options
 Accept JIT
▹ Localhost
▹ any
▹ Prompt
 Disable Multisession
currently a Bug in PDT

26. Debug CLI scripts
#> export XDEBUG_CONFIG=“idekey=ECLIPSE_DBGP“↵
#> php myScript.php ↵
#> export XDEBUG_CONFIG=““ ↵
 Preconditions
▹JIT configured
▹ Breakpoint set or 'Break at first line' active
 Debug cronjobs, PHPUnit tests, etc.

27. Debugging made easy!
 Firefox Add-on
„Xdebug Helper“

28. DEMO

29. Troubleshooting
 Monitor TCP/IP
▹ Withershark / ethereal
▹ TCP/IP Monitor

30. TCP/IP Monitor (remote debugging only)

31. Questions?
Further questions? Ask me at:
lapistano@php.net

32. Contact'n Slides
 Slides
▹ SlideShare: http://slideshare.com/lapistano
 Contact
▹ Blog: http://bastian-feder.de
▹ Email: php@bastian-feder.de
 Rate the talk @ http://joind.in/talk/view/1066

33. References
 xDebug
(http://www.xdebug.org)
▹ Komodo precompilations
(http://downloads.activestate.com/Komodo/releases/5.2.2/remotedebugging)
▹ DBGp Proxy
(http://derickrethans.nl/debugging_with_multiple_users.php)
 Eclipse PDT
(http://www.eclipse.org/pdt)
 Xdebug-Helper
(https://addons.mozilla.org/en-US/firefox/addon/3960 )

34. License
 This set of slides and the source code included
in the download package is licensed under the
Creative Commons Attribution-
Noncommercial-Share Alike 2.0 Generic
License
http://creativecommons.org/licenses/by-nc-sa/2.0/deed.en