Memcached::incrementMemcached::prepend
(PECL memcached >= 0.1.0)
Memcached::prepend — Prepend data to an existing item
Descrição
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_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.
Parâmetros
- key
-
The key of the item to prepend the data to.
- value
-
The string to prepend.
Valor Retornado
Retorna TRUE em caso de sucesso ou FALSE em falhas. The Memcached::getResultCode will return Memcached::RES_NOTSTORED if the key does not exist.
Exemplos
Exemplo #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'));
?>
O exemplo acima irá imprimir:
string(6) "defabc"
Veja Também
- Memcached::prependByKey - Prepend data to an existing item on a specific server
- Memcached::append - Append data to an existing item
add a note
User Contributed NotesMemcached::prepend