@@Template code

<?php
class Page
{
  var $page;

  function Page($template = "template.html") {
    if (file_exists($template))
      $this->page = join("", file($template));
    else
      die("Template file $template not found.");
  }

  function parse($file) {
    ob_start();
    include($file);
    $buffer = ob_get_contents();
    ob_end_clean();
    return $buffer;
  }

  function replace_tags($tags) {
      foreach ($tags as $tag => $data) {
        $data = (file_exists($data)) ? $this->parse($data) : $data;
        $this->page = eregi_replace("{" . $tag . "}", $data,
                      $this->page);
        }
  }

  function output() {
    echo $this->page;
  }
}
?>

@@ page that calls template.php
<?php

include 'template.php';

$page = new Page("index.tpl");

for($i = 0; $i < 5; $i++){

$page->replace_tags(array("NAME" => 'Name', "CAT" => 'cat'));

}

$page->output();
?>