Documentation

Horde_HashTable_Memcache extends Horde_HashTable_Base
in package
implements Horde_HashTable_Lock

Implementation of HashTable for a Memcache server.

Tags
author

Michael Slusarz slusarz@horde.org

category

Horde

copyright

2013-2017 Horde LLC

license

http://www.horde.org/licenses/lgpl21 LGPL 2.1

Interfaces, Classes, Traits and Enums

Horde_HashTable_Lock
Extension to base HashTable class by adding lock methods to prevent access from other PHP processes.

Table of Contents

$locking  : bool
$persistent  : bool
$prefix  : string
$_memcache  : Horde_Memcache
Memcache object.
$_noexist  : array<string|int, mixed>
A list of items known not to exist.
$_params  : array<string|int, mixed>
Configuration parameters.
$_persistent  : bool
Persistent storage provided by driver?
__construct()  : mixed
Constructor.
__get()  : mixed
__set()  : mixed
clear()  : mixed
Clear all hash table entries.
delete()  : bool
Delete a key(s).
exists()  : mixed
Do the keys exists?
get()  : mixed
Get data associated with a key(s).
hkey()  : string
Add local prefix to beginning of key.
lock()  : mixed
Obtain lock on a key.
offsetExists()  : mixed
offsetGet()  : mixed
offsetSet()  : mixed
offsetUnset()  : mixed
serialize()  : mixed
set()  : bool
Set the value of a key.
stats()  : mixed
Get the statistics output from the current memcache pool.
unlock()  : mixed
Release lock on a key.
unserialize()  : mixed
_delete()  : bool
Delete keys.
_exists()  : array<string|int, mixed>
Get data associated with keys.
_get()  : array<string|int, mixed>
Get data associated with keys.
_getExists()  : mixed
Does a get/exists action on a set of keys.
_init()  : mixed
Do initialization.
_set()  : bool
Set the value of a key.

Properties

$locking read-only

public bool $locking

Does hash table provide locking? (@since 1.1.0)

$persistent read-only

public bool $persistent

Does hash table provide persistent storage?

$prefix write-only

public string $prefix

Set the hash key prefix.

$_memcache

Memcache object.

protected Horde_Memcache $_memcache

$_noexist

A list of items known not to exist.

protected array<string|int, mixed> $_noexist = array()

$_params

Configuration parameters.

protected array<string|int, mixed> $_params = array('prefix' => 'hht_')

$_persistent

Persistent storage provided by driver?

protected bool $_persistent = \false

Methods

__construct()

Constructor.

public __construct([array<string|int, mixed> $params = array() ]) : mixed
Parameters
$params : array<string|int, mixed> = array()

Additional configuration parameters:

  - memcache: (Horde_Memcache) [REQUIRED] Memcache object.
Return values
mixed —

__get()

public __get(mixed $name) : mixed
Parameters
$name : mixed
Return values
mixed —

__set()

public __set(mixed $name, mixed $val) : mixed
Parameters
$name : mixed
$val : mixed
Return values
mixed —

clear()

Clear all hash table entries.

public clear() : mixed
Return values
mixed —

delete()

Delete a key(s).

public delete(mixed $keys) : bool
Parameters
$keys : mixed

The key or an array of keys to delete.

Return values
bool —

True on success.

exists()

Do the keys exists?

public exists(mixed $keys) : mixed
Parameters
$keys : mixed

The key or an array of keys.

Return values
mixed —

A boolean/array of booleans indicating existence (return type is the type of $keys).

get()

Get data associated with a key(s).

public get(mixed $keys) : mixed
Parameters
$keys : mixed

The key or an array of keys.

Return values
mixed —

The string/array on success (return type is the type of $keys); false value(s) on failure.

hkey()

Add local prefix to beginning of key.

public hkey(string $key) : string
Parameters
$key : string

Key name.

Return values
string —

Hash table key identifier.

lock()

Obtain lock on a key.

public lock(mixed $key) : mixed
Parameters
$key : mixed

The key to lock.

Return values
mixed —

offsetExists()

public offsetExists(mixed $offset) : mixed
Parameters
$offset : mixed
Return values
mixed —

offsetGet()

public offsetGet(mixed $offset) : mixed
Parameters
$offset : mixed
Return values
mixed —

offsetSet()

public offsetSet(mixed $offset, mixed $value) : mixed
Parameters
$offset : mixed
$value : mixed
Return values
mixed —

offsetUnset()

public offsetUnset(mixed $offset) : mixed
Parameters
$offset : mixed
Return values
mixed —

serialize()

public serialize() : mixed
Return values
mixed —

set()

Set the value of a key.

public set(string $key, string $val[, array<string|int, mixed> $opts = array() ]) : bool
Parameters
$key : string

The key.

$val : string

The string to store.

$opts : array<string|int, mixed> = array()

Additional options:

  - expire: (integer) Expiration time in seconds.
            DEFAULT: Doesn't expire.
  - replace: (boolean) Replace the value of key. If key doesn't exist,
             returns false.
             DEFAULT: false
Return values
bool —

True on success, false on error.

stats()

Get the statistics output from the current memcache pool.

public stats() : mixed
Tags
see

Horde_Memcache#stats()

Return values
mixed —

unlock()

Release lock on a key.

public unlock(mixed $key) : mixed
Parameters
$key : mixed

The key to lock.

Return values
mixed —

unserialize()

public unserialize(mixed $data) : mixed
Parameters
$data : mixed
Return values
mixed —

_delete()

Delete keys.

protected _delete(mixed $keys) : bool
Parameters
$keys : mixed
Return values
bool —

True on success.

_exists()

Get data associated with keys.

protected _exists(mixed $keys) : array<string|int, mixed>
Parameters
$keys : mixed

An array of keys.

Return values
array<string|int, mixed> —

Existence check. Values are boolean true/false.

_get()

Get data associated with keys.

protected _get(mixed $keys) : array<string|int, mixed>
Parameters
$keys : mixed

An array of keys.

Return values
array<string|int, mixed> —

The retrieved keys. Non-existent keys should return false as the value.

_getExists()

Does a get/exists action on a set of keys.

protected _getExists(mixed $keys, callable $callback) : mixed
Parameters
$keys : mixed

The key or an array of keys.

$callback : callable

The internal callback action.

Return values
mixed —

The results.

_init()

Do initialization.

protected _init() : mixed
Return values
mixed —

_set()

Set the value of a key.

protected _set(mixed $key, mixed $val, mixed $opts) : bool
Parameters
$key : mixed

The key.

$val : mixed

The string to store.

$opts : mixed

Additional options (see set()).

Return values
bool —

True on success.

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