$f3->route ('POST|GET /upload',
    function() {

    // Reference. upload script from https://www.w3schools.com/php/php_file_upload.asp

        $target_dir = $_SERVER['DOCUMENT_ROOT'] ."/328/signup/images/";

        $imageFileName = $target_dir . basename($_FILES["fileToUpload"]["name"]);
       // echo "<BR>" .$imageFileName ." <br>";
        $uploadOk = 1;
        $imageFileType = pathinfo($imageFileName,PATHINFO_EXTENSION);
        // Check if image file is a actual image or fake image
        if(isset($_POST["submit"])) {
            $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
            if($check !== false) {
                echo "File is an image - " . $check["mime"] . ".";
                $uploadOk = 1;
            } else {
               echo "File is not an image.";
                $uploadOk = 0;
            }
        }
        // Check if file already exists
        if (file_exists($imageFileName)) {
            echo "Sorry, file already exists.";
            $uploadOk = 0;
        }
        // Check file size
        if ($_FILES["fileToUpload"]["size"] > 500000) {
            echo "Sorry, your file is too large.";
            $uploadOk = 0;
        }
        // Allow certain file formats
        if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
            && $imageFileType != "gif" ) {
            echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
            $uploadOk = 0;
        }
        // Check if $uploadOk is set to 0 by an error
        if ($uploadOk == 0) {
            echo "Sorry, your file was not uploaded.";
            // if everything is ok, try to upload file
        } else {
            // target_file
            if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $imageFileName)) {
          //      echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
            } else {
        //        echo "Sorry, there was an error uploading your file.";
            }
        }
//      $view = new View;
//      echo $view->render('/pages/summery.php');
        header('Location: /328/signup/summery');