Download script error - Help. Filescan, server connection. PHP

Ok, so I thought I had the script completed, but when I tested it, it's not producing the results...

I have this download script that contains a form.  In this form, there is a drop down menu, and a textfield.  The drop down menu contains four different servers.  A user selects the server they wish to connect to, and they enter the filename+extension they wish to download.  When the submit button is clicked, the script should connect to the server that was selected in the drop down, and search for the file that was entered into the textfield.  If it is found, it should allow the user to download the file.  If it is not found, it should echo "File not found."

I have attached the script I have, hoping someone can help me figure out why it is not working.  When I type in an exact filename that is on the server I want to connect to, the result is always a page refresh.  Even if I type in a file that is not on the server.


download.php
========================
<?php
session_start();
include_once('log.php');

if (!isset($_SESSION['logged_in'] ))
{
    header("Location:access_denied.php");
}
require_once('db.php');
$targetServer = $_POST['select'];

// Retrieve the connection information from a database
$query = "SELECT ipAddress, Username, Password FROM serverList WHERE Server_name = '$targetServer' LIMIT 1";
$result = mysql_query($query);

if (mysql_num_rows($result))
{
   $data = mysql_fetch_object($result);

    // set up basic connection
   $conn_id = ftp_connect($data->ipAddress);

   // login with username and password
   $login_result = ftp_login($conn_id, $data->Username, $data->Password);
 
}

function findFile($conn_id, $folder, $filename)
{
        error_reporting(1);
      $results = array();
      $contents = ftp_nlist($conn_id, '.');
      foreach($contents AS $file)
      {
              if($file == '.' || $file == '..')
                  continue;
           if(ftp_chdir($conn_id,$file))
           {
                  $result = findFile($conn_id,$folder.'/'.$file,$filename);
                  if(is_array($result))
                  {
                        foreach($result AS $retval)
                        {
                              $results[] = $retval;
                        }
                  }
                  else if($result !== false)
                  {
                        $results[] = $result;
                  }
                  ftp_cdup($conn_id);
            }
            else
            {
                  if(strcmp($file,$filename)==0)
                  {
                        $results[] = $folder.'/'.$file;
                  }
            }
      }
      if(count($results)>0)
      {
            if(count($results)==1)
                  return $results[0];
            else
                  return $results;
      }
      else
            return false;
}

function download($conn_id, $filelocation)
{
      $tmp_file = substr(md5(time()),0,8);
      $handle = fopen($tmp_file, 'w');
      $filename = array_pop(split('/',$filelocation));
      $ext = array_pop(split('.',$filename));
      if(ftp_fget($conn_id, $handle, $filelocation, FTP_BINARY, 0))
      {
                 $filesize = filesize($tmp_file);
           header('content-disposition: attachment; filename='.$filename);
           header('Content-Type: content='.$ext);
           header('Content-Length: '.$filesize);
           readfile($tmp_file);
               unlink($tmp_file);
           return $filesize;
      }
      else
        {
                 unlink($tmp_file);
           return "Download failed";
        }
}

function connectFindDownload($ftp_server, $ftp_user, $ftp_pass, $filename, $folder = '.')
{
      $conn_id = ftp_connect($ftp_server);
      $login_result = ftp_login($conn_id, $ftp_user, $ftp_pass);
      if(!$login_result)
      {
            return "connection failed";
      }
      else
      {
            ftp_chdir($conn_id,$folder);
            $filelocations = findFile($conn_id, $folder, $filename);
            if($filelocations != false)
            {
                  if(is_array($filelocations))
                  {
                        $filelocations = $filelocations[0];
                  }
                  if($folder != '.')
                        $filelocations = str_replace($folder.'/','',$filelocations);
                  return download($conn_id, $filelocations);
            }
            else
                  return "File not found";
      }
      ftp_close($conn_id);
}

findFile($conn_id, $folder, $filename);
download($conn_id, $filelocation);
connectFindDownload($ftp_server, $ftp_user, $ftp_pass, $filename, $folder = '.');
?>