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plurals

POLate static binding
primarykey
Id
12329852
data
AcceptedAnswerId
12329922
AnswerCount
3
ClosedDate
CommentCount
3
CommunityOwnedDate
CreationDate
2012-09-08T10:16:01.077
FavoriteCount
0
LastActivityDate
2012-09-08T10:52:10.700
LastEditDate
2012-09-08T10:52:10.700
LastEditorUserId
727208
OwnerUserId
1606150
ParentId
0
PostTypeId
1
Score
7
ViewCount
411
LastEditorDisplayName
text
Body
I've got a little problem. Here it is: <ol> <li>This is my singleton abstract class: <pre><code>abstract class Singleton { protected static $_instance = NULL; /** * Prevent direct object creation */ final private function __construct() { $this->actionBeforeInstantiate(); } /** * Prevent object cloning */ final private function __clone() { } /** * Returns new or existing Singleton instance * @return Singleton */ final public static function getInstance(){ if(null !== static::$_instance){ return static::$_instance; } static::$_instance = new static(); return static::$_instance; } abstract protected function actionBeforeInstantiate(); } </code></pre></li> <li>After that I create an abstract registry class: <pre><code>abstract class BaseRegistry extends Singleton { //... } </code></pre></li> <li>Now it's time for session registry. <pre><code>class BaseSessionRegistry extends BaseRegistry { //... protected function actionBeforeInstantiate() { session_start(); } } </code></pre></li> <li>The final step: <pre><code>class AppBaseSessionRegistryTwo extends BaseSessionRegistry { //... } class AppBaseSessionRegistry extends BaseSessionRegistry { //... } </code></pre></li> <li>Testing <pre><code>$registry = AppBaseSessionRegistry::getInstance(); $registry2 =AppBaseSessionRegistryTwo::getInstance(); echo get_class($registry) . '|' . get_class($registry2) . ' '; </code></pre></li> </ol> Output: <pre><code>AppBaseSessionRegistry|AppBaseSessionRegistry </code></pre> My expectations were: <pre><code>AppBaseSessionRegistry|AppBaseSessionRegistryTwo </code></pre> Why did I get such result? And how can I remake my code to obtain result that I expected? UPDATE: i use this in my framework. And users will extend my <code>BaseSessionRegistry</code> class and will add their stuff. I want to solve this inside my framework classes
Tags
<php><oop><design-patterns>
Title
Late static binding
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. UStereško
UserOwnerUserId
1. USwarmspringwinds
plurals
PostLinksPostIdRelatedPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
3. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 POLate static binding
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
 singulars
 PostPostId
 POLate static binding
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
3. VO
 singulars
 PostPostId
 POLate static binding
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId

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