(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
the get_flags is given Memcached::GET_EXTENDED,
it will also return 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.
keyThe key of the item to retrieve.
cache_cb
Read-through caching callback or null.
get_flags
Flags to control the returned result. When Memcached::GET_EXTENDED
is given, the function will also return the CAS token.
Returns the value stored in the cache or false otherwise.
If the get_flags is set to Memcached::GET_EXTENDED,
an array containing the value and the CAS token is returned instead of only the value.
The Memcached::getResultCode() will return
Memcached::RES_NOTFOUND if the key does not exist.
| Version | Description |
|---|---|
| PECL memcached 3.0.0 |
The &cas_token parameter was removed.
Instead get_flags was added and when it is given the value of Memcached::GET_EXTENDED it will ensure the CAS token to be fetched.
|
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 */
/* ... */
}
}
?>