web pages not showing up after tranferring files to new server

I am working on a Zen Cart web site for the first time. I did my authoring on a different server and everything worked fine. I transferred my files to a new server and now my web pages do not display. I can't understand it; everything is the same but on a different server. This is the first time that I have worked on an entirely php web site.

My first thought is that the path was wrong. I deleted the index.php from the remote server and created a testing index.html page. The page showed up fine. But for some reason, the index.php page is not showing and when I check the source code, it's empty. All the paths seem to be right to the includes seem to be correct. Here is the code:

<?php

  require('includes/application_top.php');

  $language_page_directory = DIR_WS_LANGUAGES . $_SESSION['language'] . '/';

  $directory_array = $template->get_template_part($code_page_directory, '/^header_php/');

  foreach ($directory_array as $value) {

    require($code_page_directory . '/' . $value);

  }

  require($template->get_template_dir('html_header.php',DIR_WS_TEMPLATE, $current_page_base,'common'). '/html_header.php');

  require($template->get_template_dir('main_template_vars.php',DIR_WS_TEMPLATE, $current_page_base,'common'). '/main_template_vars.php');

  $directory_array = $template->get_template_part(DIR_WS_MODULES . 'pages/' . $current_page_base, '/^on_load_/', '.js');

  foreach ($directory_array as $value) {

    $onload_file = DIR_WS_MODULES . 'pages/' . $current_page_base . '/' . $value;

    $read_contents='';

    $lines = @File($onload_file);

    foreach($lines as $line) {

      $read_contents .= $line;

    }

  $za_onload_array[] = $read_contents;

  }

  $directory_array=array();

  $tpl_dir=$template->get_template_dir('.js', DIR_WS_TEMPLATE, 'jscript/on_load', 'jscript/on_load_');

  $directory_array = $template->get_template_part($tpl_dir ,'/^on_load_/', '.js');

  foreach ($directory_array as $value) {

    $onload_file = $tpl_dir . '/' . $value;

    $read_contents='';

    $lines = @File($onload_file);

    foreach($lines as $line) {

      $read_contents .= $line;

    }

    $za_onload_array[] = $read_contents;

  }

  if (isset($zc_first_field) && $zc_first_field !='') $za_onload_array[] = $zc_first_field;

  $zv_onload = "";

  if (isset($za_onload_array) && count($za_onload_array)>0) $zv_onload=implode(';',$za_onload_array);

  $zv_onload = str_replace(';;',';',$zv_onload.';');

  if (trim($zv_onload) == ';') $zv_onload='';

  require($template->get_template_dir('tpl_main_page.php',DIR_WS_TEMPLATE, $current_page_base,'common'). '/tpl_main_page.php');

?>

</html>

<?php

?>

<?php require(DIR_WS_INCLUDES . 'application_bottom.php'); ?>

Any suggestions would be greatly appreciated!