Memcache::setServerParams

Changes server parameters and status at runtime

&reftitle.description; `bool` `Memcache::setServerParams` `string` `host` `int` `port` 11211 `int` `timeout` `int` `retry_interval`&false; `bool` `status` `callable` `failure_callback`

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

This function has been added to Memcache version 2.1.0.

&reftitle.parameters;

`host`

- Point to the host where memcached is listening for connections.

`port`

- Point to the port where memcached is listening for connections.

`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 algorithm. 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.

&reftitle.returnvalues;

&return.success;

&reftitle.examples;

### `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');

    ?>

&reftitle.seealso;

- `Memcache::addServer`
- `Memcache::getServerStatus`