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APCIterator 类

(PECL apc >= 3.1.1)

简介

APCIterator 类使得遍历大容量APC缓存更容易，这是很有帮助的因为它允许同时获取已经定义的每个被锁定实例的条目数，因此它释放的其他活动的缓存锁，而不是阻碍整个缓存以完成获取100（默认）个缓存数据的迭代，在大缓存条目。此外，使用正则匹配效率更高，因为它被改为C级别的实现。

类摘要

APCIterator implements Iterator , Traversable {

/* Methods */

public __construct ( string $cache [, mixed $search = NULL [, int $format = APC_ITER_ALL [, int $chunk_size = 100 [, int $list = APC_LIST_ACTIVE ]]]] )

public current ( void ) : mixed

public getTotalCount ( void ) : int

public getTotalHits ( void ) : int

public getTotalSize ( void ) : int

public key ( void ) : string

public next ( void ) : void

public rewind ( void ) : void

public valid ( void ) : void

}

APCIterator::__construct — 构造一个 APCIterator 迭代器对象
APCIterator::current — 获取当前项
APCIterator::getTotalCount — 获取总数
APCIterator::getTotalHits — 获取缓存命中数
APCIterator::getTotalSize — 获取所有缓存的尺寸大小
APCIterator::key — 获取迭代器的键
APCIterator::next — 移到下一项
APCIterator::rewind — 倒退迭代器
APCIterator::valid — 检查当前位置是否有效

User Contributed Notes

Stefan W 07-Oct-2013 11:05


This class will NOT EXIST if the APC extension is installed but disabled in your php.ini.



This is an important difference to functions like apc_store(), which will still exist and be callable even when APC is disabled. In many installations, the default settings are



   apc.enabled = on

   apc.enable_cli = off



which means that APCIterator exists for HTTP requests, but not with the "cli" SAPI. The solution is to either set "apc.enable_cli" to "on" (with the resultant startup penalty for CLI scripts), or to check the relevant ini settings before your script tries to access APCIterator.

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APCIterator 类

简介

类摘要

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User Contributed Notes

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