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                            # 第一步，申明：自定義助手函數

## 文件：app\common.php

~~~
// 自定義success助手函數
function success($msg = "成功",$url = ''){
	$data['status'] = 200;
	$data['msg'] = $msg;
	$data['url'] = $url;
	return json($data);
}

// 自定義error助手函數
function error($msg = "失敗",$url = ''){
	$data['status'] = 202;
	$data['msg'] = $msg;
	$data['url'] = $url;
	return json($data);
}
~~~

# 第二步，調研：控制器

~~~
	public function delete($id = 0,$tab = 1){
		if (Db::name('category')->where('id',$id)->delete()) {
			return success('刪除分類成功',url('index',['tab'=>$tab]));
		}else{
			$this->error('刪除分類失敗',url('index',['tab'=>$tab]));
		}	
	}
~~~

#### 注意事項

~~~
1、return success('刪除分類成功',url('index',['tab'=>$tab]));
2、$this->success('刪除分類成功',url('index',['tab'=>$tab]));
~~~

1、表示調用通用函數
2、表示調用對象中的方法
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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