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(PECL memcached >= 0.1.0)
Memcached::prepend — Prepend data to an existing item
Memcached::prepend() prepends the given value string to the value of an existing item. The reason that value is forced to be a string is that prepending mixed types is not well-defined.
Hinweis:
If the Memcached::OPT_COMPRESSION is enabled, the operation will fail and a warning will be issued, because prepending compressed data to a value that is potentially already compressed is not possible.
The key of the item to prepend the data to.
The string to prepend.
Gibt bei Erfolg TRUE zurück. Im Fehlerfall wird FALSE zurückgegeben. The Memcached::getResultCode() will return Memcached::RES_NOTSTORED if the key does not exist.
Beispiel #1 Memcached::prepend() example
<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
$m->setOption(Memcached::OPT_COMPRESSION, false);
$m->set('foo', 'abc');
$m->prepend('foo', 'def');
var_dump($m->get('foo'));
?>
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
string(6) "defabc"
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