info/php-the-right-way
1
0
Fork 0
mirror of https://github.com/codeguy/php-the-right-way.git synced 2025-08-09 07:26:29 +02:00
Code Issues Projects Releases Wiki Activity

Added a sentence defining the benefit or using DI over the singleton pattern

Browse Source
This commit is contained in:
Corey McMahon
2013-01-14 15:28:25 +11:00
parent 7850ebd5e4
commit 8d5ab66099
1 changed files with 3 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
pages/Design-Patterns.md
View File

@@ -101,8 +101,9 @@ request lifecycle in a web application. This typically occurs when we have globa
class) or a shared resource (such as an event queue). class) or a shared resource (such as an event queue).
You should be wary when using the singleton pattern, as by its very nature it introduces global state into your You should be wary when using the singleton pattern, as by its very nature it introduces global state into your
application, reducing testability. In most cases, dependency injection can (and should) be used in place of application, reducing testability. In most cases, dependency injection can (and should) be used in place of a
singleton objects. singleton class. Using dependency injection means that we do not introduce unnecessary coupling into the design of our
application, as the object using the shared or global resource requires no knowledge of a concretely defined class.
* [Singleton pattern on Wikipedia](https://en.wikipedia.org/wiki/Singleton_pattern) * [Singleton pattern on Wikipedia](https://en.wikipedia.org/wiki/Singleton_pattern)