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SL is also designed to be decoupled and is very suitable for service- and component-based applications.
Service Locator acts as a runtime linker and can dynamically modify the services selected by a class at runtime without having to make any modifications to the class.
A class can be targeted to increase, decrease, or replace the services it needs at runtime, thereby achieving a certain degree of optimization.
Achieve complete decoupling of service providers and service users, facilitating independent testing and code reuse across frameworks.
Basic functions
SL in Yii is implemented by yiidiServiceLocator
<code>class ServiceLocator extends Component{ // 用于缓存服务、组件等的实例 private $_components = []; // 保存服务和组件的定义,通常为配置数组,可以用来创建具体的实例 private $_definitions = []; // 重载了getter, 使得访问服务和组件与访问类的属性一样。 // 保留了原来Component的getter所具有的功能 public function __get($name){} }</code>
Data structure
SL provides methods to register services and components.
$_components is used to cache instances of components or services in SL and is a readable and writable attribute.
Reference
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