Memcached::getByKey
Memcached::getDelayedByKey
Memcached
PHP Manual

# Memcached::getDelayed

Request multiple items

### Description

public bool Memcached::getDelayed ( array `$keys` [, bool `$with_cas` [, callable `$value_cb` ]] )

Memcached::getDelayed issues a request to memcache for multiple items the keys of which are specified in the `keys` array. The method does not wait for response and returns right away. When you are ready to collect the items, call either Memcached::fetch or Memcached::fetchAll. If `with_cas` is true, the CAS token values will also be requested.

Instead of fetching the results explicitly, you can specify a result callback via `value_cb` parameter.

### Parameters

`keys`

  Array of keys to request.

`with_cas`

  Whether to request CAS token values also.

`value_cb`

  The result callback or `NULL`.

### Return Values

Returns `TRUE` on success or `FALSE` on failure. Use Memcached::getResultCode if necessary.

### Examples

Example #1 Memcached::getDelayed example

`<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
$m->set('int', 99);
$m->set('string', 'a simple string');
$m->set('array', array(11, 12));
$m->getDelayed(array('int', 'array'), true);
var_dump($m->fetchAll());
?>`

The above example will output:

    array(2) {
      [0]=>
      array(3) {
        ["key"]=>
        string(3) "int"
        ["value"]=>
        int(99)
        ["cas"]=>
        float(2363)
      }
      [1]=>
      array(3) {
        ["key"]=>
        string(5) "array"
        ["value"]=>
        array(2) {
          [0]=>
          int(11)
          [1]=>
          int(12)
        }
        ["cas"]=>
        float(2365)
      }
    }

### See Also

- Memcached::getDelayedByKey
- Memcached::fetch
- Memcached::fetchAll