(PECL memcached >= 0.1.0)
Retrieve an item
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.
Returns:
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:
Memcached::get() 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)
Memcached::get() 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:
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