Memcached
PHP Manual

Memcached::prepend

(PECL memcached >= 0.1.0)

Memcached::prepend — Prepend data to an existing item

Descrizione

public bool Memcached::prepend ( string $key , string $value )

Memcached::prepend() prepends the given value string to the value of an existing item. The reason that value is forced to be a string is that prepending mixed types is not well-defined.

Nota:

If the Memcached::OPT_COMPRESSION is enabled, the operation will fail and a warning will be issued, because prepending compressed data to a value that is potentially already compressed is not possible.

Elenco dei parametri

key

The key of the item to prepend the data to.

value

The string to prepend.

Valori restituiti

Restituisce TRUE in caso di successo, FALSE in caso di fallimento. The Memcached::getResultCode() will return Memcached::RES_NOTSTORED if the key does not exist.

Esempi

Example #1 Memcached::prepend() example

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

$m->set('foo', 'abc');
$m->prepend('foo', 'def');
var_dump($m->get('foo'));
?>

Il precedente esempio visualizzerà:

string(6) "defabc"

Vedere anche:

Memcached
PHP Manual