Memcache::getStats() returns an associative array with server's statistics. Array keys correspond to stats parameters and values to parameter's values. Also you can use memcache_get_stats() function.
type
The type of statistics to fetch. Valid values are {reset, malloc, maps, cachedump, slabs, items, sizes}. According to the memcached protocol spec these additional arguments "are subject to change for the convenience of memcache developers".
slabid
Used in conjunction with type
set to
cachedump to identify the slab to dump from. The cachedump
command ties up the server and is strictly to be used for
debugging purposes.
limit
Used in conjunction with type
set to
cachedump to limit the number of entries to dump. Default value
is 100.