Memcached::prepend
Prepend data to an existing item
Description
public boolnull Memcached::prepend(string $key
, string $value
)
Note:
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.
Parameters
-
key
-
The key of the item to prepend the data to.
-
value
-
The string to prepend.
Return Values
Returns true
on success or false
on failure.
Returns null
when compression is on.
Errors/Exceptions
Returns null
and raises an E_WARNING
when
compression is enabled.
Examples
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'));
?>
The above example will output:
See Also
- Memcached::prependByKey
- Memcached::append