Memcache::delete

(PECL memcache >= 0.2.0)

Memcache::delete — Delete item from the server

Descrizione

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

Memcache::delete() deletes an item with the key.

Elenco dei parametri

key: The key associated with the item to delete.
exptime: This deprecated parameter is not supported, and defaults to 0 seconds. Do not use this parameter.

Valori restituiti

Restituisce true in caso di successo, false in caso di fallimento.

Log delle modifiche

Versione	Descrizione
PECL memcache 3.0.5	The `exptime` is deprecated, and should not be supplied. Values other than `0` may cause unexpected errors.

Esempi

Example #1 Memcache::delete() example

<?php

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

/* item will be deleted by the server */
memcache_delete($memcache_obj, 'key_to_delete');

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

$memcache_obj->delete('key_to_delete');

?>

Vedere anche:

Memcache::set() - Store data at the server
Memcache::replace() - Replace value of the existing item

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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 ¶

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)

down

-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);
?>

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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