Memcached::get
Memcached::get
(PECL memcached >= 0.1.0)
Memcached::get — Retrieve an item
Description
public mixed Memcached::get ( string $key [, callable $cache_cb [, float &$cas_token ]] )
Memcached::get() returns the item that was previously stored under the key. If the item is found and cas_token variable is provided, it will contain the CAS token value for the item. See Memcached::cas() for how to use CAS tokens. Read-through caching callback may be specified via cache_cb parameter.
Parameters
-
key -
The key of the item to retrieve.
-
cache_cb -
Read-through caching callback or
NULL. -
cas_token -
The variable to store the CAS token in.
Return Values
Returns the value stored in the cache or FALSE otherwise. The Memcached::getResultCode() will return Memcached::RES_NOTFOUND if the key does not exist.
Examples
Example #1 Memcached::get() example #1
<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
$m->set('foo', 100);
var_dump($m->get('foo'));
?> The above example will output:
int(100)
Example #2 Memcached::get() example #2
<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
if (!($ip = $m->get('ip_block'))) {
if ($m->getResultCode() == Memcached::RES_NOTFOUND) {
$ip = array();
$m->set('ip_block', $ip);
} else {
/* log error */
/* ... */
}
}
?> See Also
- Memcached::getByKey() - Retrieve an item from a specific server
- Memcached::getMulti() - Retrieve multiple items
- Memcached::getDelayed() - Request multiple items
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/memcached.get.php
