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Memcache::delete

(PECL memcache >= 0.2.0)

Memcache::deleteEfface un élément du serveur de cache

Description

Memcache::delete(string $key, int $exptime = 0): bool

Memcache::delete() efface l'élément identifié par la clé key.

Liste de paramètres

key

La clé associée à l'élément à supprimer.

exptime

Ce paramètre obsolète n'est pas supporté, et vaut par défaut 0 seconde. N'utilisez pas ce paramètre.

Valeurs de retour

Cette fonction retourne true en cas de succès ou false si une erreur survient.

Historique

Version Description
PECL memcache 3.0.5 Le paramètre exptime est déprécié et ne devrait pas être fourni. Des valeurs autres que 0 peuvent provoquer des erreurs inattendues.

Exemples

Exemple #1 Exemple avec Memcache::delete()

<?php

/* API procédurale */
$memcache_obj = memcache_connect('memcache_host', 11211);

/* l'élément sera effacé par la serveur de cache */
memcache_delete($memcache_obj, 'key_to_delete');

/* API orientée objet */
$memcache_obj = new Memcache;
$memcache_obj->connect('memcache_host', 11211);

$memcache_obj->delete('key_to_delete');

?>

Voir aussi

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User Contributed Notes 5 notes

up
6
nibblebot at gmail dot com
14 years ago
the Memcache::delete(key) function is broken on several combinations of memcached+pecl-memcache combinations.

pecl-memcache 2.2.5 + memcached 1.4.2 - Memcache::delete(key) WORKS

pecl-memcache 2.2.5 + memcached 1.4.3 - Memcache::delete(key) DOES NOT WORK

pecl-memcache 2.2.5 + memcached 1.4.4 - Memcache::delete(key) WORKS

pecl-memcache 2.2.5 + memcached 1.4.5 - Memcache::delete(key) WORKS

pecl-memcache 3.0.4 + memcached 1.4.2 - Memcache::delete(key) WORKS

pecl-memcache 3.0.4 + memcached 1.4.3 - Memcache::delete(key) DOES NOT WORK

pecl-memcache 3.0.4 + memcached 1.4.4 - Memcache::delete(key) DOES NOT WORK

pecl-memcache 3.0.4 + memcached 1.4.5 - Memcache::delete(key) DOES NOT WORK
up
3
vbaspcppguy at gmail dot com
14 years ago
According to the documents, $timeout is not required, but for me if I did not include it regardless of value, it fired an error. I made a simple fix for it.

<?php
class memcache_tools extends memcache
{
public function
delete($key, $expire=0)
{
parent::delete($key, $expire);
}
}
?>

This will force it to behave as it should regardless of version.
up
0
me at adamhahn dot com
12 years ago
I could not get the delete to work properly, so I ended up trying the 'set' method and setting the timeout value to -1.

<?php
$memcache
->set('index', 'deleted', 0, -1);
?>

It solved my problem with the delete method.

(using memcached 1.4.5 and pecl-memcache 3.0.6)
up
-1
padys
11 years ago
In my case this code does NOT work:
<?php
$memcache
->set('index', 'deleted', 0, -1);
?>
because of expire == -1.

I set expire = 1 (and I prefer "replace"):
<?php
$memcache
->replace('index', '', 0, 1);
?>
up
-4
Anonymous
14 years ago
Regardless of whether or not it succeeds, for me on Ubuntu 10.04 it always returns false. Just an FYI, you can't seem to rely on the result.
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