Fatal error: Class 'Memcached' not found in /my/path
When I try : $mc= new Memcached(); I get Fatal error: Class 'Memcached' not found in /my/path phpinfo says that /etc/php5/apache2/conf.d/20-memcached.ini is loaded as an additional .ini file. The content of this file is this one : ; uncomment the next line to enable the module extension=memcached.so dpkg --get-selections | grep memcached libmemcached6 install memcached install php5-memcached install Kubuntu Apache 2.0 php 5.4.4-1 Why do I have this fatal error ? Based on your comment I don't think you have it installed properly. Make sure you see a see a section in phpinfo() such as: memcached