PHP download txt file to browser

 //下载文件
			 header('Content-Type:application/octet-stream');
			 if(preg_match('/MSIE/',$_SERVER['HTTP_USER_AGENT'])){
			 	header('Content-Disposition:attachment;filename="'.str_replace("+","20%",urlencode($newFileName)).'"');
			 }else if(preg_match('/Firefox/',$_SERVER['HTTP_USER_AGENT'])){
			 	header('Content-Disposition:attachment;filename=*"utf8'.$newFileName.'"');
			 }else{
			 	header('Content-Disposition:attachment;filename="'.$newFileName.'"');
			 }

The above introduces PHP to download txt files to the browser, including the content. I hope it will be helpful to friends who are interested in PHP tutorials.