(PECL memcache >= 2.0.0)
Memcache::getExtendedStats — 缓存服务器池中所有服务器统计信息
$type
[, int $slabid
[, int $limit
= 100
]]] )Memcache::getExtendedStats() 返回一个二维关联数据的服务器统计信息。数组的key由host:port方式 组成,无效的服务器返回的统计信息被设置为false,同样的,你可以使用函数 memcache_get_extended_stats()。
Note:
这个函数在Memcache2.0.0版本加入。
Note:
(译注)获取Memcache内所有数据方法:首先使用getExtendedStats('slabs')获取到每个服务器上活动slabs分块的id, 然后 使用getExtendedStats('cachedump', $slabid, $limit)来获取每个slab里面缓存的项,其中$slabid是slab分块id, $limit指 期望获取其中的多少条记录。
type
期望抓取的统计信息类型,可以使用的值有{reset, malloc, maps, cachedump, slabs, items, sizes}。 通过memcached协议指定这些附加参数是为了方便memcache开发者(检查其中的变动)。
slabid
用于与参数type
联合从指定slab分块拷贝数据,cachedump命令会完全占用服务器通常用于
比较严格的调试。
limit
用于和参数type
联合来设置cachedump时从服务端获取的实体条数。
返回一个二维关联数组的服务器统计信息或者在失败时返回FALSE
。
Example #1 Memcache::getExtendedStats() 示例
<?php
$memcache_obj = new Memcache;
$memcache_obj->addServer('memcache_host', 11211);
$memcache_obj->addServer('failed_host', 11211);
$stats = $memcache_obj->getExtendedStats();
print_r($stats);
?>
以上例程会输出:
Array ( [memcache_host:11211] => Array ( [pid] => 3756 [uptime] => 603011 [time] => 1133810435 [version] => 1.1.12 [rusage_user] => 0.451931 [rusage_system] => 0.634903 [curr_items] => 2483 [total_items] => 3079 [bytes] => 2718136 [curr_connections] => 2 [total_connections] => 807 [connection_structures] => 13 [cmd_get] => 9748 [cmd_set] => 3096 [get_hits] => 5976 [get_misses] => 3772 [bytes_read] => 3448968 [bytes_written] => 2318883 [limit_maxbytes] => 33554432 ) [failed_host:11211] => false )
oushunbao at 163 dot com (2011-06-16 02:57:20)
Get lists of all the keys stored in memcache server....
<?php
/**
* Function to get all memcache keys
* @author Manish Patel
* @Created: 28-May-2010
* @modified: 16-Jun-2011
*/
function getMemcacheKeys() {
$memcache = new Memcache;
$memcache->connect('127.0.0.1', 11211) or die ("Could not connect to memcache server");
$list = array();
$allSlabs = $memcache->getExtendedStats('slabs');
$items = $memcache->getExtendedStats('items');
foreach($allSlabs as $server => $slabs) {
foreach($slabs AS $slabId => $slabMeta) {
$cdump = $memcache->getExtendedStats('cachedump',(int)$slabId);
foreach($cdump AS $keys => $arrVal) {
if (!is_array($arrVal)) continue;
foreach($arrVal AS $k => $v) {
echo $k .'<br>';
}
}
}
}
}//EO getMemcacheKeys()
?>
copy from up, but fix a warning
i only add one line: if (!is_array($arrVal)) continue;
manmca dot 2280 at gmail dot com (2010-05-28 16:35:13)
Get lists of all the keys stored in memcache server....
<?php
/**
* Function to get all memcache keys
* @author Manish Patel
* @Created: 28-May-2010
*/
function getMemcacheKeys() {
$memcache = new Memcache;
$memcache->connect('127.0.0.1', 11211) or die ("Could not connect to memcache server");
$list = array();
$allSlabs = $memcache->getExtendedStats('slabs');
$items = $memcache->getExtendedStats('items');
foreach($allSlabs as $server => $slabs) {
foreach($slabs AS $slabId => $slabMeta) {
$cdump = $memcache->getExtendedStats('cachedump',(int)$slabId);
foreach($cdump AS $keys => $arrVal) {
foreach($arrVal AS $k => $v) {
echo $k .'<br>';
}
}
}
}
}//EO getMemcacheKeys()
?>
Hope it helps....