输出text文件给用户

$date=date("Ymd");$filename = $date."-".$this->user_id.".txt";$fp = fopen('./plugins/bijidown/'.$filename, 'w') or die("Unable to open file!");fwrite($fp, $str);$fp = fopen('./plugins/bijidown/'.$filename, 'r') or die("Unable to open file!");Header ( "Content-type: application/octet-stream" );Header ( "Accept-Ranges: bytes" );Header ( "Accept-Length: " . filesize ( './plugins/bijidown/' . $filename ) );Header ( "Content-Disposition: attachment; filename=" . $filename );//输出文件内容//读取文件内容并直接输出到浏览器echo fread ( $fp, filesize ( './plugins/bijidown/' . $filename ) );fclose ( $fp );exit ();