I followed these steps to install xdebug on ubuntu

Download Latest XDebug Source file

Unpack package, run: tar -xvzf  xdebug-2.2.3

Run: cd xdebug-2.2.3

Run: phpize

Run: sudo apt-get install g++-multilib

Run: CFLAGS=-m32 CPPFLAGS=-m32 ./configure

Run: make

Copy .so file to folder with extensions, run: sudo cp modules/xdebug.so /opt/lampp/lib/php/extensions/no-debug-non-zts-20090626

Edit /opt/lampp/etc/php.ini and add the line just before [Data] line, run: sudo gedit /opt/lampp/etc/php.ini

zend_extension = /opt/lampp/lib/php/extensions/no-debug-non-zts-20090626/xdebug.so

Restart web server, run: sudo /opt/lampp/lampp restart

But after restarting xampp i'm getting error

Failed loading
/opt/lampp/lib/php/extensions/no-debug-non-zts-20100525/xdebug.so:
/opt/lampp/lib/php/extensions/no-debug-non-zts-20100525/xdebug.so:
undefined symbol: zend_execute_ex

I donot know what i did wrong ?

PHP version

php version

-----------

PHP 5.5.3-1ubuntu2.1 (cli) (built: Dec 12 2013 04:24:35) 

Copyright (c) 1997-2013 The PHP Group

Zend Engine v2.5.0, Copyright (c) 1998-2013 Zend Technologies

    with Zend OPcache v7.0.3-dev, Copyright (c) 1999-2013, by Zend Technologies



phpize

------

Configuring for:

PHP Api Version:         20121113

Zend Module Api No:      20121212

Zend Extension Api No:   220121212