Memcached
PHP Manual

Memcached::append

Append data to an existing item

Description

public boolnull Memcached::append(string $key, string $value)

Memcached::append appends the given value string to the value of an existing item. The reason that value is forced to be a string is that appending 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 appending compressed data to a value that is potentially already compressed is not possible.

Parameters

key

The key under which to store the value.

value

The string to append.

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::append example

<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
$m->setOption(Memcached::OPT_COMPRESSION, false);

$m->set('foo', 'abc');
$m->append('foo', 'def');
var_dump($m->get('foo'));
?>

The above example will output:

string(6) "abcdef"

See Also

  • Memcached::appendByKey
  • Memcached::prepend