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Retrieve an item


Memcached::get

(PECL memcached >= 0.1.0)

Memcached::getRetrieve 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



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