PHP-Handbuch: Retrieve multiple items

Beschreibung

public mixed Memcached::getMulti ( array $keys [, array &$cas_tokens [, int $flags ]] )

Memcached::getMulti is similar to Memcached::get, but instead of a single key item, it retrieves multiple items the keys of which are specified in the keys array. If cas_tokens variable is provided, it is filled with the CAS token values for the found items.

Hinweis:
Unlike Memcached::get it is not possible to specify a read-through cache callback for Memcached::getMulti, because the memcache protocol does not provide information on which keys were not found in the multi-key request.

The flags parameter can be used to specify additional options for Memcached::getMulti. Currently, the only available option is Memcached::GET_PRESERVE_ORDER that ensures that the keys are returned in the same order as they were requested in.

Parameter-Liste

keys: Array of keys to retrieve.
cas_tokens: The variable to store the CAS tokens for the found items.
flags: The flags for the get operation.

Rückgabewerte

Returns the array of found itemsIm Fehlerfall wird FALSE zurückgegeben.. Benutzen Sie wenn nötig Memcached::getResultCode.

Beispiele

Beispiel #1 Memcached::getMulti example


<?php
$m = new Memcached();
$m->addServer('localhost', 11211);

$items = array(
    'key1' => 'value1',
    'key2' => 'value2',
    'key3' => 'value3'
);
$m->setMulti($items);
$result = $m->getMulti(array('key1', 'key3', 'badkey'), $cas);
var_dump($result, $cas);
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

array(2) {
  ["key1"]=>
  string(6) "value1"
  ["key3"]=>
  string(6) "value3"
}
array(2) {
  ["key1"]=>
  float(2360)
  ["key3"]=>
  float(2362)
}

Beispiel #2 Memcached::GET_PRESERVE_ORDER example


<?php
$m = new Memcached();
$m->addServer('localhost', 11211);

$data = array(
    'foo' => 'foo-data',
    'bar' => 'bar-data',
    'baz' => 'baz-data',
    'lol' => 'lol-data',
    'kek' => 'kek-data',
);

$m->setMulti($data, 3600);

$null = null;
$keys = array_keys($data);
$keys[] = 'zoo';
$got = $m->getMulti($keys, $null, Memcached::GET_PRESERVE_ORDER);

foreach ($got as $k => $v) {
    echo "$k $v\n";
}
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

foo foo-data
bar bar-data
baz baz-data
lol lol-data
kek kek-data
zoo

Siehe auch

Memcached::getMultiByKey
Memcached::get
Memcached::getDelayed