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                            ## 1、需求分析
* 我們將兩個模型類中，公共的屬性和方法，提煉出來，放入基礎模型類(BaseModel.class.php)中。
* 其它模型類完成對基礎模型類的繼承。
* 重復的代碼只寫一遍，減少代碼量，方便后期維護。

![](https://img.kancloud.cn/5e/d8/5ed8a14437a63be3ee250a87f9a9628d_1148x476.png)
## 2、創建基礎模型類文件：BaseModel.class.php
![](https://img.kancloud.cn/be/34/be34b14a10f458c0c0aea42f8666524d_596x531.png)
## 3、其它模型類繼承基礎模型類
![](https://img.kancloud.cn/30/a7/30a7ccdc88ae97571c421b52ee150774_1103x336.png)
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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