Memcache::setCompressThreshold
Memcached
Memcache Functions
PHP Manual

# Memcache::setServerParams

(PECL memcache >= 2.1.0)

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

### Description

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.

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

### Parameters

`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 immediately 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 attempted. The function takes two parameters, the hostname and port of the failed server.

### Return Values

Returns `TRUE` on success or `FALSE` on failure.

### Examples

Example #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');
?>`

### See Also

- Memcache::addServer() - Add a memcached server to connection pool
- Memcache::getServerStatus() - Returns server status

Memcache::setCompressThreshold
Memcached
Memcache Functions
PHP Manual