(PECL memcached >= 0.1.0)
Memcached::get — Retrieve an item
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.
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.
Returns the value stored in the cache or FALSE otherwise.
The Memcached::getResultCode() will return
Memcached::RES_NOTFOUND if the key does not exist.
Przykład #1 Memcached::get() example #1
<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
$m->set('foo', 100);
var_dump($m->get('foo'));
?>
Powyższy przykład wyświetli:
int(100)
Przykład #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 */
/* ... */
}
}
?>