[edit] Last updated: Fri, 17 May 2013

Memcached::getServerByKey

(PECL memcached >= 0.1.0)

Memcached::getServerByKey — Map a key to a server

Descrizione

public array Memcached::getServerByKey ( string $server_key )

Memcached::getServerByKey() returns the server that would be selected by a particular server_key in all the Memcached::*ByKey() operations.

Elenco dei parametri

server_key: la chiave che identifica il server su cui salvare il valore.

Valori restituiti

Returns an array containing three keys of host, port, and weight on success or FALSE on failure. Utilizzare Memcached:getResultCode() se necessario.

Esempi

Example #1 Memcached::getServerByKey() example


<?php
$m = new Memcached();
$m->addServers(array(
    array('mem1.domain.com', 11211, 40),
    array('mem2.domain.com', 11211, 40),
    array('mem3.domain.com', 11211, 20),
));

$m->setOption(Memcached::OPT_LIBKETAMA_COMPATIBLE, true);

var_dump($m->getServerByKey('user'));
var_dump($m->getServerByKey('log'));
var_dump($m->getServerByKey('ip'));
?>

Il precedente esempio visualizzerà qualcosa simile a:

array(3) {
  ["host"]=>
  string(15) "mem3.domain.com"
  ["port"]=>
  int(11211)
  ["weight"]=>
  int(20)
}
array(3) {
  ["host"]=>
  string(15) "mem2.domain.com"
  ["port"]=>
  int(11211)
  ["weight"]=>
  int(40)
}
array(3) {
  ["host"]=>
  string(15) "mem2.domain.com"
  ["port"]=>
  int(11211)
  ["weight"]=>
  int(40)
}

add a note User Contributed Notes Memcached::getServerByKey - [1 notes]

down

zhaoyong dot lc at gmail dot com ¶

1 month ago


The parameter server_key is very confusing, it's not a server key for MemCached Server, but it's key,in key-value pair which you stored in server.



<?php

$m = new Memcached;

$m->addServers(array(

    array('127.0.0.1',11212),

    array('127.0.0.1',11211)

));

for($i=0;$i<10;$i++){

    $key = 'key_'.$i;

    $m->add($key, 1);

}

for($i=0;$i<10;$i++) {

    $key = 'key_'.$i;

    $arr = $m->getServerByKey($key);

    echo ($key.":\t".$arr['port']."\n");

}

?>



key_0:  11212

key_1:  11211

key_2:  11212

key_3:  11212

key_4:  11212

key_5:  11211

key_6:  11211

key_7:  11212

key_8:  11212

key_9:  11211

add a note