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-Custom Template Resources {#resources.custom}
-=========================
-
-You can retrieve templates using whatever possible source you can access
-with PHP: databases, sockets, files, etc. You do this by writing
-resource plugin functions and registering them with Smarty.
-
-See [resource plugins](#plugins.resources) section for more information
-on the functions you are supposed to provide.
-
-> **Note**
->
-> Note that you cannot override the built-in `file:` resource, but you
-> can provide a resource that fetches templates from the file system in
-> some other way by registering under another resource name.
-
-
-    <?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'}
-
-