Generate HTML from a PHP template (http://stackoverflow.com/questions/1309800/php-eval-that-evaluates-html-php/1309805#1309805)

do_template.php

define('TEMPLATE_DIR', 'path/to/my/templates');

/**
 * Processes a PHP template.
 *
 * Looks in OCRA_TEMPLATE_DIR for {$template}.tpl, and includes it,
 * probably generating an HTML page.
 *
 * @author Adam Bradley <hisself@adambradley.net>
 *
 * @param string $template The template file to use
 * @param array $data Data To be passed to the template.
 * @param boolean $return If true, return a string, otherwise print the result to the browser.
 *
 * @return boolean|string The template results (if $return=true) or the return value of ob_end_flush()
 *
 * @todo Should throw an exception if the template file doesn't exist.
 */
function do_template($template, Array $data, $return=false) {
    //TODO: Should throw an exception if the template doesn't exist.
    extract($data);    
    
    ob_start();
    include(TEMPLATE_DIR ."/$template.tpl");

    if ( $return ) return ob_get_flush();
    return ob_end_flush();
}