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                            ~~~
  if (!file_exists($filename)){  //判斷能否獲取這個文件
            header("Content-type: text/html; charset=utf-8");
            echo "File not found!";
            exit; 
        } else {
            Header("Content-type: application/octet-stream");
            Header("Accept-Ranges: bytes");
            Header("Accept-Length: ".filesize($filename));
            Header("Content-Disposition: attachment; filename=".basename($filename));
            echo file_get_contents($filename);
            exit();
        }
~~~

主要就是設置header做到的，

讀取文件

方法1：file\_get\_contents()

方法2：fwrite($file,$filesize);

需要注意就是必須養成exit的好習慣
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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