PHP : Function Reference : Memcache Functions : Memcache::delete PHP Examples Tutorials References

Example 1312. Memcache::delete() example

<?php

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

/* after 10 seconds item will be deleted by the server */
memcache_delete($memcache_obj, 'key_to_delete', 10);

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

$memcache_obj->delete('key_to_delete', 10);

?>

Timeout is the amount of time the key is in the delete queue. While the key is in the delete queue you can't add that key back into the cache, but you can use set. Set will remove the key from the delete queue and add it to cache. Ex: <?php $memcache = new Memcache(); $memcache->connect("127.0.0.1", 11211); // add "test" with timeout 60 sec echo "add: " . ($memcache->add("test", "value", 0, 60) ? "t" : "f") . " "; // get works because it was just added echo "get: " . (($ret = $memcache->get("test")) !== false ? "'$ret'" : "f") . " "; // delete works because it's in cache echo "delete: " . ($memcache->delete("test", 1) ? "t" : "f") . " "; // can't get "test" it is deleted echo "get: " . (($ret = $memcache->get("test")) !== false ? "'$ret'" : "f") . " "; // can't add "test" it is still in delete queue echo "add: " . ($memcache->add("test", "value", 0, 60) ? "t" : "f") . " "; echo "sleep(2) "; // force output ob_flush(); flush(); // wait 2 sec sleep(2); // add works because "test" is not in delete queue echo "add: " . ($memcache->add("test", "value", 0, 60) ? "t" : "f") . " "; // delete works because it's in cache echo "delete: " . ($memcache->delete("test", 1) ? "t" : "f") . " "; // set removes "test" from delete queue and adds it to the cache echo "set: " . ($memcache->set("test", "value", 0, 60) ? "t" : "f") . " "; // get works echo "get: " . (($ret = $memcache->get("test")) !== false ? "'$ret'" : "f") . " "; echo "sleep(2) "; // force output ob_flush(); flush(); // wait 2 sec sleep(2); // get still works echo "get: " . (($ret = $memcache->get("test")) !== false ? "'$ret'" : "f") . " "; // delete works because it's in cache echo "delete: " . ($memcache->delete("test") ? "t" : "f") . " "; // add works because "test" wasn't added to the delete queue echo "add: " . ($memcache->add("test", "value", 0, 60) ? "t" : "f") . " "; // delete works because it's in cache echo "delete: " . ($memcache->delete("test") ? "t" : "f") . " "; ?> Output: add: t get: 'value' delete: t get: f add: f sleep(2) add: t delete: t set: t get: 'value' sleep(2) get: 'value' delete: t add: t delete: t

Memcache::delete

Delete item from the server ()
bool Memcache::delete ( string key [, int timeout] )

Example 1312. Memcache::delete() example

Code Examples / Notes » memcache_delete

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Memcache::delete

Delete item from the server () bool Memcache::delete ( string key [, int timeout] )

Example 1312. Memcache::delete() example

Code Examples / Notes » memcache_delete

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Delete item from the server ()
bool Memcache::delete ( string key [, int timeout] )