Memcache::decrement
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.
Memcache::delete
(PECL memcache >= 0.2.0)
Memcache::delete — Elimina un valor del servidor
Descripción
bool Memcache::delete
( string $key
[, int $timeout = 0
] )
Memcache::delete() elimina el valor según la clave key.
Parámetros
- key
-
La clave asociada con el valor a eliminar.
- timeout
-
Este parámetro ya no está soportado, y su valor por omisión es 0 segundos. No se debe usar este parámetro.
Historial de cambios
| Versión | Descripción |
|---|---|
| Desconocido | No se recomienda utilizar el parámetro timeout. Su comportamiento no es consistente entre las versiones de memcached, pero sí es seguro utilizar 0. El uso de otros valores puede provocar que la función delete de memcache falle. |
Valores devueltos
Devuelve TRUE en caso de éxito o FALSE en caso de error.
Ejemplos
Example #1 Ejemplo de Memcache::delete()
<?php
/* API por procesos */
$memcache_obj = memcache_connect('memcache_host', 11211);
/* el valor será eliminado por el servidor */
memcache_delete($memcache_obj, 'key_to_delete');
/* API OO */
$memcache_obj = new Memcache;
$memcache_obj->connect('memcache_host', 11211);
$memcache_obj->delete('key_to_delete');
?>
Ver también
- Memcache::set() - Guarda datos en el servidor
- Memcache::replace() - Reemplaza el valor de un valor existente
add a note
User Contributed Notes
Memcache::delete
vbaspcppguy at gmail dot com
08-Sep-2010 07:47
Anonymous
28-Jul-2010 10:30
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.
nibblebot at gmail dot com
09-Jul-2010 03:58
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
z at zaebal dot com
28-Dec-2009 04:21
To workaround the "delete" issue just pass zero as timeout parameter.
Wilfried Loche
25-Aug-2009 09:01
Hi,
Be careful about multi memcached servers. It seems logical the get() methods use only one server but, what about the delete() and update() methods?
In fact, at least the delete() method perform a delete on the first server it finds!
For the test code, you can see it there:
http://pecl.php.net/bugs/bug.php?id=16810
Hope this helps someone!
Wilfried
Jocke Berg
05-May-2009 10:02
I was searching for a function/method in this class that would "reset" (or "update", depending on how you look at it) the timeout value for a key. I was searching my butt off when I finally figured; this is the one.
Example: You have accessed a web-page including something that should be "in-cache" for way more than 30 days (until the memcache server gets a downtime for some reason). Since the limit for having something in the cache is 30 days, this will be a problem. Simple (yet somewhat non-optimal) solution:
<?php
//How to "update" the value
if($memcache_key_exists){
$memcache_obj->delete('key', (3600*24*30));
}
?>
Have fun.