用php把数据生成txt文件的使用方法

可以下载各个类型的文件，目前我只使用了下载txt文件，可以使用

这个是最牛逼的下载类，可以不是我写的。。。转载地址关了找不到了，对作者说声抱歉和感谢

function download($file){         //First, see if the file exists      if (!is_file($file)) { die("<b>404 File not found!</b>"); }         //Gather relevent info about file      $len = filesize($file);      $filename = basename($file);      $file_extension = strtolower(substr(strrchr($filename,"."),1));         //This will set the Content-Type to the appropriate setting for the file      switch( $file_extension ) {        case "pdf": $ctype="application/pdf"; break;        case "txt": $ctype="application/txt"; break;        case "exe": $ctype="application/octet-stream"; break;        case "zip": $ctype="application/zip"; break;        case "doc": $ctype="application/msword"; break;        case "xls": $ctype="application/vnd.ms-excel"; break;        case "ppt": $ctype="application/vnd.ms-powerpoint"; break;        case "gif": $ctype="image/gif"; break;        case "png": $ctype="image/png"; break;        case "jpeg":        case "jpg": $ctype="image/jpg"; break;        case "mp3": $ctype="audio/mpeg"; break;        case "wav": $ctype="audio/x-wav"; break;        case "mpeg":        case "mpg":        case "mpe": $ctype="video/mpeg"; break;        case "mov": $ctype="video/quicktime"; break;        case "avi": $ctype="video/x-msvideo"; break;           //The following are for extensions that shouldn't be downloaded (sensitive stuff, like php files)        case "php":        case "htm":        case "html":        //case "txt": die("<b>Cannot be used for ". $file_extension ." files!</b>"); break;           default: $ctype="application/force-download";      }         //Begin writing headers      header("Pragma: public");      header("Expires: 0");      header("Cache-Control: must-revalidate, post-check=0, pre-check=0");      header("Cache-Control: public");       header("Content-Description: File Transfer");             //Use the switch-generated Content-Type      header("Content-Type: $ctype");         //Force the download      $header="Content-Disposition: attachment; filename=".$filename.";";      header($header );      header("Content-Transfer-Encoding: binary");      header("Content-Length: ".$len);      @readfile($file);      exit;  }  

我使用的是thinkphp框架，获取数据后，对数据进行拼接，保证格式，其中换行和tab使用\r\n,\t  注意一定要用双引号，单引号不解析，

public function totext(){$todayusermessage = M("Todayusermessage");$todayusermessageArr = $todayusermessage->select();$filename = './Public/Files/'.date('Y_m_d',time()).'.txt';$data = "序号\t姓名\t手机号\r\n";foreach($todayusermessageArr as $k=>$v){$data .= $k."\t".$v['name']."\t".$v['phone']."\r\n";}$file = file_put_contents($filename, $data);// 写好之后下载$re = download($filename);//检测是否设置文件名和文件是否存在 }

下载后如图