(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.
Nota:
If the
Memcached::OPT_COMPRESSIONis 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.
keyThe key of the item to prepend the data to.
valueThe string to prepend.
Restituisce true in caso di successo, false in caso di fallimento.
Returns null when compression is on.
Example #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'));
?>Il precedente esempio visualizzerà:
string(6) "defabc"