-
-
header("Cache-Control: public"); - header("Accept-Ranges: bytes");
$file = "a.7z"; - $filename = "a.7z";
$size=filesize($file); - $size1=$size-1;
- //获得字节范围
- if(isset($_SERVER['HTTP_RANGE'])) {
- list($name, $range) = explode("=",$_SERVER['HTTP_RANGE']);
- $length=$size1-$range;
- header("HTTP/1.1 206 Partial Content"); //http协议头状态码,表示以部分内容传输
- header("Content-Range: bytes ".$range."-".$size1."/".$size);
- }else{
- $length = $size;
- }
header("Content-Length: $length"); - header("Content-Type: application/octet-stream");
- header("Content-Disposition: attachment; filename=".$filename);
$fp=fopen($file,"rb"); //设定文件指针位置 - fseek($fp,$range);
while(!feof($fp)){ - set_time_limit(0);
- echo fread($fp,1024);
- flush();
- ob_flush();
- }
- fclose($fp);
- exit;
- ?>
-
|
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