$file_dir=$totalDirectory;
???? $file_name=$filename;
???? //echo ''./db/''.$file_dir.$file_name;
??? if (file_exists($file_dir.$file_name)){
????????? $file=fopen($file_dir.$file_name,''r'');
???????? Header(''Content-type:application/octet-stream'');
???????? Header(''Accept-Ranges:bytes'');
???????? Header(''Content-Disposition:attachment;filename=''.$file_name);
???????? echo fread($file,filesize($file_dir.$file_name));
???????? fclose($file);
???????? exit;
????????
???? }else{
???????? echo ''file is not exists'';
???? }
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