I managed to install xmlrpc successfully by http://community.apachefriends.org/f/viewtopic.php?f=17&t=34264&p=139235&hilit=xmlrpc#p139235
. One thing need to be noticed:
Use apt-get install php5-xmlrpc will only install the latest version of xmlrpc. So I have to installed the lampp with the same version of php. In my case, I have to install xmlrpc 1.7.4 beta 3.
This is not the best solution I want because I want to install xmlrpc in my lampp 1.7.3a. Is there a way to download the right version I want through apt-get?