Serve file to user over http via php

[enlaseHer]

If I goto http://site.com/uploads/file.pdf I can retrieve a file. However, if I have a script such as: \[code\]<?php ini_set('display_errors',1);error_reporting(E_ALL|E_STRICT);//require global definitions require_once("includes/globals.php"); //validate the user before continuing isValidUser(); $subTitle = "Attachment"; $attachmentPath = "/var/www/html/DEVELOPMENT/serviceNow/selfService/uploads/";if(isset($_GET['id']) and !empty($_GET['id'])){ //first lookup attachment meta information $a = new Attachment(); $attachment = $a->get($_GET['id']); //filename will be original file name with user name.n prepended $fileName = $attachmentPath.$_SESSION['nameN'].'-'.$attachment->file_name; //instantiate new attachmentDownload and query for attachment chunks $a = new AttachmentDownload(); $chunks= $a->getRecords(array('sys_attachment'=>$_GET['id'], '__order_by'=>'position')); $fh = fopen($fileName.'.gz','w'); // read and base64 encode file contents foreach($chunks as $chunk){ fwrite($fh, base64_decode($chunk->data)); } fclose($fh); //open up filename for writing $fh = fopen($fileName,'w'); //open up filename.gz for extraction $zd = gzopen($fileName.'.gz', "r"); //iterate over file and write contents while (!feof($zd)) { fwrite($fh, gzread($zd, 60*57)); } fclose($fh); gzclose($zd); unlink($fileName.'.gz'); $info = pathinfo($fileName); header('Content-Description: File Transfer'); header('Content-Type: '.Mimetypes::get($info['extension'])); header('Content-Disposition: attachment; filename=' . basename($fileName)); 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($fileName)); ob_clean(); flush(); readfile($fileName); exit();}else{ header("location: ".$links['status']."?".urlencode("item=incident&action=view&status=-1&place=".$links['home'])); }?>\[/code\]This results in sending me the file, but when I open it I receive an error saying:\[code\]"File type plain text document (text/plain) is not supported"\[/code\]