Memcache::delete

memcache_delete

(PECL memcache >= 0.2.0)

Memcache::delete -- memcache_delete — Elimina un elemento del servidor de caché

Descripción

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

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

Memcache::delete() elimina el elemento identificado por la clave key.

Parámetros

key: La clave asociada al elemento a eliminar.
exptime: Este argumento obsoleto no es soportado, y su valor por omisión es 0 segundos. No se debe utilizar este argumento.

Valores devueltos

Esta función retorna true en caso de éxito o false si ocurre un error.

Historial de cambios

Versión	Descripción
PECL memcache 3.0.5	El argumento `exptime` está deprecado y no debería ser proporcionado. Valores distintos de `0` pueden provocar errores inesperados.

Ejemplos

Ejemplo #1 Ejemplo con Memcache::delete()

<?php

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

/* el elemento será eliminado por el servidor de caché */
memcache_delete($memcache_obj, 'key_to_delete');

/* API orientada a objetos */
$memcache_obj = new Memcache;
$memcache_obj->connect('memcache_host', 11211);

$memcache_obj->delete('key_to_delete');

?>

Ver también

Memcache::set() - Almacena datos en el servidor de caché
Memcache::replace() - Remplaza el valor de un elemento existente

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User Contributed Notes 5 notes

down

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

down

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.

down

me at adamhahn dot com ¶

13 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)

down

-1

padys ¶

12 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);
?>

down

-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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