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                            ## psr是什么?

官方解釋: [# 關于 PSR](https://learnku.com/docs/psr/about-psr/1613)
![](https://img.kancloud.cn/f9/12/f912d9efe1c847f73a6f525c4331fda5_317x718.png)
我解釋: 
`psr` 是 `輪子` 的規范, 比如 `日志輪子` `容器輪子` `自動加載輪子`,

`psr` 基本都是 `interface` ,大家寫輪子的時候,實現 `psr` 接口, `方法名字` `方法的作用`..... 就一樣了。

## psr官方的一些代碼
![](https://img.kancloud.cn/7a/3a/7a3a08e690673d5b4ef42422c02fcb5a_813x813.png)


![](https://img.kancloud.cn/f1/0b/f10b00217f97f5fad67ef73a1d467a95_568x752.png)



                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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