How is the return value determined? What is the definition of 'recently'? Does this function return true if the item was stored using the current connection?
(PECL memcached >= 2.0.0)
Memcached::isPristine — Check if the instance was recently created
Memcached::isPristine() checks if the Memcache instance was recently created.
This function has no parameters.
Returns the true if instance is recently created, false otherwise.