ContactForm7 File test and display upload result

Hi,
I have a ContactForm7 form that I use to users send me some files by email, I need help todisplay a page with confirmation of sending, and info get by php about the file.
I only get “File too large or bad file extension.” and this information is in a blank page (2 problems to solve) how do I put result in a page of my site? PHP is executed but don’t see file that is uploaded in order to processe .
I have this in CF7 Form additional configurations

on_sent_ok: "location = 'https://www.example.com/files/filetest.php';

I have in filetest.php

<?php

	$allowedExts = array("jpg");
    $extension = strtolower( end(explode(".", $_FILES["file"]["name"])) );
//    if (($_FILES["file"]["size"] < 200000)
//    && in_array($extension, $allowedExts))
        if(in_array($extension, $allowedExts))
      {
        if ($_FILES["file"]["error"] > 0)
          {
              echo "Error: " . $_FILES["file"]["error"] . "<br />";
          }
        else
          {
            echo "<H2>Submission Success</H2><BR>";
            echo "<H2>Details of the File</H2><BR>";
            $fname = $_FILES["file"]["tmp_name"];

			echo "Upload: " . $_FILES["file"]["name"] . "<br>";
			echo "Type: " . $_FILES["file"]["type"] . "<br>";
			echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
			echo "Stored in: " . $_FILES["file"]["tmp_name"] . "<br>";

	if (file_exists("upload/" . $_FILES["file"]["name"]))
      {
      echo $_FILES["file"]["name"] . " already exists. ";
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "upload/" . $_FILES["file"]["name"]);
      echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
      }
            echo "<BR>";

          }
      }
    else
      {
        echo "File too large or bad file extension.";
      }

    function __autoload($class_name) {
        include 'classes/'.$class_name . '.php';
    }

?>

Thanks