API Documentation

Cache/Backend/ExtendedInterface.php

Zend Framework

LICENSE

This source file is subject to the new BSD license that is bundled with this package in the file LICENSE.txt. It is also available through the world-wide-web at this URL: http://framework.zend.com/license/new-bsd If you did not receive a copy of the license and are unable to obtain it through the world-wide-web, please send an email to license@zend.com so we can send you a copy immediately.

category
Zend  
copyright
Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)  
license
New BSD License  
package
Zend_Cache  
subpackage
Zend_Cache_Backend  
version
$Id: ExtendedInterface.php 23775 2011-03-01 17:25:24Z ralph $  

\Zend_Cache_Backend_ExtendedInterface

Extends from
\Zend_Cache_Backend_Interface
copyright
Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)  
license
New BSD License  
package
Zend_Cache  
subpackage
Zend_Cache_Backend  

Methods

methodpublicclean( string $mode = Zend_Cache, array $tags = array ) : boolean

Clean some cache records

Inherited from: \Zend_Cache_Backend_Interface::clean()

Available modes are : Zend_Cache::CLEANING_MODE_ALL (default) => remove all cache entries ($tags is not used) Zend_Cache::CLEANING_MODE_OLD => remove too old cache entries ($tags is not used) Zend_Cache::CLEANING_MODE_MATCHING_TAG => remove cache entries matching all given tags ($tags can be an array of strings or a single string) Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG => remove cache entries not {matching one of the given tags} ($tags can be an array of strings or a single string) Zend_Cache::CLEANING_MODE_MATCHING_ANY_TAG => remove cache entries matching any given tags ($tags can be an array of strings or a single string)

Parameters
Name Type Description
$mode string Clean mode
$tags array Array of tags
Returns
Type Description
boolean true if no problem
methodpublicgetCapabilities( ) : array

Return an associative array of capabilities (booleans) of the backend

The array must include these keys : - automatic_cleaning (is automating cleaning necessary) - tags (are tags supported) - expired_read (is it possible to read expired cache records (for doNotTestCacheValidity option for example)) - priority does the backend deal with priority when saving - infinite_lifetime (is infinite lifetime can work with this backend) - get_list (is it possible to get the list of cache ids and the complete list of tags)

Returns
Type Description
array associative of with capabilities
methodpublicgetFillingPercentage( ) : int

Return the filling percentage of the backend storage

Returns
Type Description
int integer between 0 and 100
methodpublicgetIds( ) : array

Return an array of stored cache ids

Returns
Type Description
array array of stored cache ids (string)
methodpublicgetIdsMatchingAnyTags( array $tags = array ) : array

Return an array of stored cache ids which match any given tags

In case of multiple tags, a logical AND is made between tags

Parameters
Name Type Description
$tags array array of tags
Returns
Type Description
array array of any matching cache ids (string)
methodpublicgetIdsMatchingTags( array $tags = array ) : array

Return an array of stored cache ids which match given tags

In case of multiple tags, a logical AND is made between tags

Parameters
Name Type Description
$tags array array of tags
Returns
Type Description
array array of matching cache ids (string)
methodpublicgetIdsNotMatchingTags( array $tags = array ) : array

Return an array of stored cache ids which don't match given tags

In case of multiple tags, a logical OR is made between tags

Parameters
Name Type Description
$tags array array of tags
Returns
Type Description
array array of not matching cache ids (string)
methodpublicgetMetadatas( string $id ) : array

Return an array of metadatas for the given cache id

The array must include these keys : - expire : the expire timestamp - tags : a string array of tags - mtime : timestamp of last modification time

Parameters
Name Type Description
$id string cache id
Returns
Type Description
array array of metadatas (false if the cache id is not found)
methodpublicgetTags( ) : array

Return an array of stored tags

Returns
Type Description
array array of stored tags (string)
methodpublicload( string $id, boolean $doNotTestCacheValidity = false ) : string|false

Test if a cache is available for the given id and (if yes) return it (false else)

Inherited from: \Zend_Cache_Backend_Interface::load()

Note : return value is always "string" (unserialization is done by the core not by the backend)

Parameters
Name Type Description
$id string Cache id
$doNotTestCacheValidity boolean

If set to true, the cache validity won't be tested

Returns
Type Description
stringfalse cached datas
methodpublicremove( string $id ) : boolean

Remove a cache record

Inherited from: \Zend_Cache_Backend_Interface::remove()
Parameters
Name Type Description
$id string Cache id
Returns
Type Description
boolean True if no problem
methodpublicsave( string $data, string $id, array $tags = array, int $specificLifetime = false ) : boolean

Save some string datas into a cache record

Inherited from: \Zend_Cache_Backend_Interface::save()

Note : $data is always "string" (serialization is done by the core not by the backend)

Parameters
Name Type Description
$data string Datas to cache
$id string Cache id
$tags array Array of strings, the cache record will be tagged by each string entry
$specificLifetime int

If != false, set a specific lifetime for this cache record (null => infinite lifetime)

Returns
Type Description
boolean true if no problem
methodpublicsetDirectives( array $directives ) : void

Set the frontend directives

Inherited from: \Zend_Cache_Backend_Interface::setDirectives()
Parameters
Name Type Description
$directives array assoc of directives
methodpublictest( string $id ) : mixed|false

Test if a cache is available or not (for the given id)

Inherited from: \Zend_Cache_Backend_Interface::test()
Parameters
Name Type Description
$id string cache id
Returns
Type Description
mixedfalse (a cache is not available) or "last modified" timestamp (int) of the available cache record
methodpublictouch( string $id, int $extraLifetime ) : boolean

Give (if possible) an extra lifetime to the given cache id

Parameters
Name Type Description
$id string cache id
$extraLifetime int
Returns
Type Description
boolean true if ok
Documentation was generated by DocBlox 0.13.3.