PHP处理大文件下载

 1 <?php 2 set_time_limit(0); ?//大文件在读取内容未结束时会被超时处理，导致下载文件不全。 ??3 ???4 $fpath = ‘book.zip‘; 5 $file_pathinfo = pathinfo($fpath); ??6 $file_name = $file_pathinfo[‘basename‘]; ??7 $file_extension = $file_pathinfo[‘extension‘]; ??8 $handle = fopen($fpath,"rb"); ??9 if (FALSE === $handle) ?10 ????exit("Failed to open the file"); ?11 $filesize = filesize($fpath); ?12 ??13 header("Content-type:video/mpeg4");//更具不同的文件类型设置header输出类型 ?14 header("Accept-Ranges:bytes"); ?15 header("Accept-Length:".$filesize); ?16 header("Content-Disposition: attachment; filename=".$file_name); ?17 ??18 $contents = ‘‘; ?19 while (!feof($handle)) { ?20 ????$contents = fread($handle, 8192); ?21 ????echo $contents; ?22 ????@ob_flush(); ?//把数据从PHP的缓冲中释放出来 ?23 ????flush(); ?????//把被释放出来的数据发送到浏览器24 } ?25 fclose($handle); ?26 exit;