Memcached::get
Retrieve an item
Description
public mixed Memcached::get(string $key
, callablenull $cache_cb
= null
, int $get_flags
= 0)
Parameters
-
key
-
The 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.
Return Values
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.
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:
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
- Memcached::getMulti
- Memcached::getDelayed