/**
*文件下载
*@param $filepath源文件路径
*/
function dwon_file($filepath){
if(file_exists($filepath)){
header('content-type:text/html;charset=utf8');
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($filepath));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length:'.filesize($filepath));
readfile($filepath);
return true;
}else{
return false;
}
}