Install XCache 2.0.0 on CentOS 5.8 with PHP 5.3.3

After I upgrade my server from php 5.2 to php 5.3.3, I need XCache to accelerate my phpBB.
I did an installation from source. Then when I run command to check php version, it shew.
xcache-2.0.0

~/src # wget http://xcache.lighttpd.net/pub/Releases/2.0.0/xcache-2.0.0.tar.gz
~/src # tar vzxf xcache-2*.tar.gz
~/src # cd xcache-2.0.0
~/src/xcache-2.0.0 # phpize
~/src/xcache-2.0.0 $ ./configure --enable-xcache
~/src/xcache-2.0.0 $ make
~/src/xcache-2.0.0 # make install
~/src/xcache-2.0.0 # cp xcache.ini /etc/php.d/
~/src/xcache-2.0.0 #

Now edit xcache.ini with vi

~/src/xcache-2.0.0 # vi /etc/php.d/xcache.ini

Comment zend_extension and zend_extension_ts, and un-comment extension = xcache.so
Then, add your own password for xcache.admin with md5 result of your pass.
xcache-ini-config

Then restart Apache web server to make it work.

~/src/xcache-2.0.0 # service httpd restart