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                             先在你的數據表設置好索引，如下圖
 ![](https://box.kancloud.cn/1adfb931cbc1aacbe7d7746ddffea55e_699x78.png)
 然后寫入語句為Db('quan') ->insert($data,true);只要帶個true，就能避免重復寫入
 參考鏈接
 http://www.runoob.com/mysql/mysql-handling-duplicates.html
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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