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This document uses PHP Chinese website manual Release
(PECL memcached >= 2.0.0)
Memcached::isPersistent — Check if a persitent connection to memcache is being used
Memcached::isPersistent() checks if the connections to the memcache servers are persistent connections.
此函数没有参数。
Returns true if Memcache instance uses a persistent connection, false otherwise.