PHP. Руководство по PHP. 2005
Memcache::get
Memcache::get
Description
string Memcache::get (string key)string Memcache::get (array keys)
Memcache::get() returns previously stored data if
an item with such key exists on the server at this
moment.
Memcache::get() returns FALSE on failure or
if such key was not found.
Memcache::flush
Memcache::getStats
Отвечу на любые вопросы. С уважением, Дмитрий Владимирович.