php memcache

1. install memcached

wget http://dag.wieers.com/rpm/packages/rpmforge-release/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm
rpm --install rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm

Or
http://dag.wieers.com/rpm/packages/rpmforge-release/rpmforge-release-0.3.6-1.el5.rf.i386.rpm
rpm --install rpmforge-release-0.3.6-1.el5.rf.i386.rpm

yum install --enablerepo=rpmforge memcached

2. download memcache.php
wget http://livebookmark.net/memcachephp/memcachephp.zip

3. start memcache

service memcached restart
/usr/local/bin/memcached -d -u root -m 512






Reference:
http://www.howtoforge.com/php_memcache_centos5.0
http://www.nioxiao.com/php-memcached
http://www.ibm.com/developerworks/cn/opensource/os-php-fastapps3/index.html