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Memcached::prepend

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(PECL memcached >= 0.1.0)

Memcached::prepend — Prepend data to an existing item

Description

public Memcached::prepend ( string $key , string $value ) : bool

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.

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.

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Parameters

key

The key of the item to prepend the data to.

value

The string to prepend.

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Return Values

Returns TRUE on success or FALSE on failure. The Memcached::getResultCode() will return Memcached::RES_NOTSTORED if the key does not exist.

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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:

string(6) "defabc"

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See Also

Find a PHP function

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Document created the 30/01/2003, last modified the 26/10/2018
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References

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