php: simple template engine

I have a function called load_template()

this function has two parameters

• $name => the name of the template
• $vars => array of key => value variables to be replaced in the template.

the way I want this to work is.

in the template ('test') I want to be able to write

<?php echo $title; ?>

then call

load_template('test', array('title' => 'My Title'));

and have it fill it out.

how can I do this?

I am sure it can be improved.

public static function template($name, $vars = array()) {
  if (开发者_JAVA技巧is_file(TEMPLATE_DIR . $name . '.php')) {
    ob_start();
    extract($vars);
    require(TEMPLATE_DIR . $name . '.php');
    $contents = ob_get_contents();
    ob_end_clean();
    return $contents;
  }
  throw new exception('Could not load template file \'' . $name . '\'');
  return false;
}

function load_template($name, $vars)
{
  extract($vars);
  include $name;
}

Wrap with ob_start and ob_get_clean if you want to capture the output in a variable.

Something like this?

function load_template($name, $vars)
{
  include('template/'.$name.'.tpl'); //.tpl, .inc, .php, whatever floats your boat
}

and in template/whatever.tpl you'd have:

...
<title><?php echo $vars['title'] ?></title>
...

...
<?php if (!empty($vars['content'])): //template still needs to know if the content is empty to display the div ?>
    <div id="content">
<?php echo $vars['content']; ?>
    </div>
<?php endif; ?>
...

Of course, that assumes the output being printed directly. You could have the tpl file print directly, or produce a string, or buffer the output from the tpl file and return it from load_template