Check if a persitent connection to memcache is being used

# Memcached::isPersistent

(PECL memcached >= 2.0.0)

Memcached::isPersistent — Check if a persitent connection to memcache is being used

### 说明

public function Memcached::isPersistent(): bool

Memcached::isPersistent() checks if the connections to the memcache servers are persistent connections.

### 参数

此函数没有参数。

### 返回值

Returns `true` if Memcache instance uses a persistent connection, `false` otherwise.

### 参见

- Memcached::isPristine() - Check if the instance was recently created

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