PHP: Memcache::setServerParams - Manual

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Last updated: Sat, 27 Jan 2007

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# Memcache::setServerParams

(no version information, might be only in CVS)

Memcache::setServerParams -- Changes server parameters and status at runtime

## Описание

bool Memcache::setServerParams ( string host [, int port [, int timeout [, int retry_interval [, bool status [, callback failure_callback]]]]] )

Memcache::setServerParams() changes server parameters at runtime. You can also use the memcache_set_server_params() function.

> Замечание: This function has been added to Memcache version 2.1.0.

## Список параметров

`host`

  Point to the host where memcached is listening for connections.

`port`

  Point to the port where memcached is listening for connections. This parameter is optional and its default value is 11211.

`timeout`

  Value in seconds which will be used for connecting to the daemon. Think twice before changing the default value of 1 second - you can lose all the advantages of caching if your connection is too slow.

`retry_interval`

  Controls how often a failed server will be retried, the default value is 15 seconds. Setting this parameter to -1 disables automatic retry. Neither this nor the `persistent` parameter has any effect when the extension is loaded dynamically via dl().

`status`

  Controls if the server should be flagged as online. Setting this parameter to `FALSE` and `retry_interval` to -1 allows a failed server to be kept in the pool so as not to affect the key distribution algoritm. Requests for this server will then failover or fail immediatly depending on the `memcache.allow_failover` setting. Default to `TRUE`, meaning the server should be considered online.

`failure_callback`

  Allows the user to specify a callback function to run upon encountering an error. The callback is run before failover is attemped. The function takes two parameters, the hostname and port of the failed server.

## Возвращаемые значения

Возвращает `TRUE` в случае успешного завершения или `FALSE` в случае возникновения ошибки.

## Примеры

Пример 1. Memcache::setServerParams() example

`<?php
function _callback_memcache_failure($host, $port) {
print "memcache '$host:$port' failed";
}
/* OO API */
$memcache = new Memcache;
// Add the server in offline mode
$memcache->addServer('memcache_host', 11211, false, 1, 1, -1, false);
// Bring the server back online
$memcache->setServerParams('memcache_host', 11211, 1, 15, true, '_callback_memcache_failure');
/* procedural API */
$memcache_obj = memcache_connect('memcache_host', 11211);
memcache_set_server_params($memcache_obj, 'memcache_host', 11211, 1, 15, true, '_callback_memcache_failure');
?>`

## Смотрите также

Memcache::addServer()
Memcache::getServerStatus()

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mhash Memcache::setCompressThreshold

Last updated: Sat, 27 Jan 2007
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