<?php

/**
* MySQL Resource
*
* Resource Implementation based on the Custom API to use
* MySQL as the storage resource for Smarty's templates and configs.
*
* Table definition:
* <pre>CREATE TABLE IF NOT EXISTS `templates` (
*   `name` varchar(100) NOT NULL,
*   `modified` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
*   `source` text,
*   PRIMARY KEY (`name`)
* ) ENGINE=InnoDB DEFAULT CHARSET=utf8;</pre>
*
* Demo data:
* <pre>INSERT INTO `templates` (`name`, `modified`, `source`) VALUES ('test.tpl', "2010-12-25 22:00:00", '{$x="hello world"}{$x}');</pre>
*
* @package Resource-examples
* @author Rodney Rehm
*/
class Smarty_Resource_Mysql extends Smarty_Resource_Custom {
 // PDO instance
 protected $db;
 // prepared fetch() statement
 protected $fetch;
 // prepared fetchTimestamp() statement
 protected $mtime;

 public function __construct() {
     try {
         $this->db = new PDO("mysql:dbname=test;host=127.0.0.1", "smarty", "smarty");
     } catch (PDOException $e) {
         throw new SmartyException('Mysql Resource failed: ' . $e->getMessage());
     }
     $this->fetch = $this->db->prepare('SELECT modified, source FROM templates WHERE name = :name');
     $this->mtime = $this->db->prepare('SELECT modified FROM templates WHERE name = :name');
 }
 
 /**
  * Fetch a template and its modification time from database
  *
  * @param string $name template name
  * @param string $source template source
  * @param integer $mtime template modification timestamp (epoch)
  * @return void
  */
 protected function fetch($name, &$source, &$mtime)
 {
     $this->fetch->execute(array('name' => $name));
     $row = $this->fetch->fetch();
     $this->fetch->closeCursor();
     if ($row) {
         $source = $row['source'];
         $mtime = strtotime($row['modified']);
     } else {
         $source = null;
         $mtime = null;
     }
 }
 
 /**
  * Fetch a template's modification time from database
  *
  * @note implementing this method is optional. Only implement it if modification times can be accessed faster than loading the comple template source.
  * @param string $name template name
  * @return integer timestamp (epoch) the template was modified
  */
 protected function fetchTimestamp($name) {
     $this->mtime->execute(array('name' => $name));
     $mtime = $this->mtime->fetchColumn();
     $this->mtime->closeCursor();
     return strtotime($mtime);
 }
}


require_once 'libs/Smarty.class.php';
$smarty = new Smarty();
$smarty->registerResource('mysql', new Smarty_Resource_Mysql());

// using resource from php script
$smarty->display("mysql:index.tpl");
?>

  

And from within Smarty template:

{include file='mysql:extras/navigation.tpl'}