Memcached::get

(PECL memcached >= 0.1.0)

Memcached::get — 锟斤拷锟斤拷一锟斤拷元锟斤拷

说锟斤拷

public Memcached::get ( string $key [, callback $cache_cb [, float &$cas_token ]] ) : mixed

Memcached::get()锟斤拷锟斤拷之前锟芥储锟斤拷key锟铰碉拷元锟截★拷锟斤拷锟皆拷乇锟斤拷业锟斤拷锟斤拷锟斤拷锟斤拷峁� 锟斤拷cas_token锟斤拷锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟阶拷锟斤拷锟斤拷锟斤拷锟斤拷锟节猴拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟矫诧拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷元锟截的版本锟斤拷牵锟皆拷锟� 锟斤拷锟皆诧拷锟斤拷锟街癸拷锟斤拷锟斤拷锟较ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟皆拷氐锟紺AS锟斤拷锟街碉拷锟斤拷锟斤拷锟紺AS锟斤拷锟街碉拷锟绞癸拷茫锟斤拷锟介看Memcached::cas()锟斤拷说锟斤拷锟斤拷 锟斤拷锟解，锟斤拷锟斤拷通锟斤拷cache_cb锟斤拷锟斤拷锟斤拷锟斤拷Read-through caching callback锟斤拷

锟斤拷锟斤拷

key

要锟斤拷锟斤拷锟斤拷元锟截碉拷key锟斤拷

cache_cb

通锟斤拷锟斤拷锟斤拷氐锟斤拷锟斤拷锟斤拷锟�NULL.

cas_token

锟斤拷锟斤拷锟斤拷元锟截碉拷CAS锟斤拷锟街碉拷锟�

锟斤拷锟斤拷值

锟斤拷锟截存储锟节凤拷锟斤拷说锟皆拷氐锟街碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟铰凤拷锟斤拷FALSE锟斤拷 锟斤拷锟絢ey锟斤拷锟斤拷锟节ｏ拷Memcached::getResultCode()锟斤拷锟斤拷Memcached::RES_NOTFOUND锟斤拷

锟斤拷锟斤拷

Example #1 Memcached::get() 示锟斤拷 #1

<?php
$m = new Memcached();
$m->addServer('localhost', 11211);

$m->set('foo', 100);
var_dump($m->get('foo'));
?>

锟斤拷锟斤拷锟斤拷锟教伙拷锟斤拷锟斤拷锟�

int(100)

Example #2 Memcached::get() 示锟斤拷 #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 */
        /* ...       */
    }
}
?>

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