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# Memcache::flush

(no version information, might be only in CVS)

Memcache::flush -- Flush all existing items at the server

## 说明

bool Memcache::flush ( void )

Memcache::flush() immediately invalidates all existing items. Memcache::flush() doesn't actually free any resources, it only marks all the items as expired, so occupied memory will be overwritten by new items. Also you can use memcache_flush() function.

## 返回值

如果成功则返回 `TRUE`，失败则返回 `FALSE`。

## 范例

例 1. Memcache::flush() example

`<?php /* procedural API */ $memcache_obj = memcache_connect('memcache_host', 11211); memcache_flush($memcache_obj); /* OO API */ $memcache_obj = new Memcache; $memcache_obj->connect('memcache_host', 11211); $memcache_obj->flush(); ?>`

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