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30){ echo ""; return ; } */ //返回的文件 header("Content-type: application/octet-stream"); //按照字节大小返回 header("Accept-Ranges: bytes"); //返回文件大小 header("Accept-Length: $file_size"); //这里客户端的弹出对话框,对应的文件名 header("Content-Disposition: attachment; filename=".$file_name); //向客户端回送数据 $buffer=1024; //为了下载的安全,我们最好做一个文件字节读取计数器 $file_count=0; //这句话用于判断文件是否结束 while(!feof($fp) && ($file_size-$file_count>0) ){ $file_data=fread($fp,$buffer); //统计读了多少个字节 $file_count+=$buffer; //把部分数据回送给浏览器; echo $file_data; } //关闭文件 fclose($fp); }
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