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-Resources {#plugins.resources}
-=========
-
-Resource plugins are meant as a generic way of providing template
-sources or PHP script components to Smarty. Some examples of resources:
-databases, LDAP, shared memory, sockets, and so on.
-
-Custom Resources may be put in a file `resource.foobarxyz.php` within
-your [`$plugins_dir`](#variable.plugins.dir), or registered on runtime
-with [`registerResource()`](#api.register.resource). In either case you
-will be able to access that resource by prepending its name to the
-template you\'re addressing: `foobarxyz:yourtemplate.tpl`.
-
-If a Resource\'s templates should not be run through the Smarty
-compiler, the Custom Resource may extend `Smarty_Resource_Uncompiled`.
-The Resource Handler must then implement the function
-`renderUncompiled(Smarty_Internal_Template $_template)`. `$_template` is
-a reference to the current template and contains all assigned variables
-which the implementor can access via
-`$_template->smarty->getTemplateVars()`. These Resources simply echo
-their rendered content to the output stream. The rendered output will be
-output-cached if the Smarty instance was configured accordingly. See
-`libs/sysplugins/smarty_internal_resource_php.php` for an example.
-
-If the Resource\'s compiled templates should not be cached on disk, the
-Custom Resource may extend `Smarty_Resource_Recompiled`. These Resources
-are compiled every time they are accessed. This may be an expensive
-overhead. See `libs/sysplugins/smarty_internal_resource_eval.php` for an
-example.
-
-
-    <?php
-
-    /**
-     * MySQL Resource
-     *
-     * Resource Implementation based on the Custom API to use
-     * MySQL as the storage resource for Smarty's templates and configs.
-     *
-     * Table definition:
-     * <pre>CREATE TABLE IF NOT EXISTS `templates` (
-     *   `name` varchar(100) NOT NULL,
-     *   `modified` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-     *   `source` text,
-     *   PRIMARY KEY (`name`)
-     * ) ENGINE=InnoDB DEFAULT CHARSET=utf8;</pre>
-     *
-     * Demo data:
-     * <pre>INSERT INTO `templates` (`name`, `modified`, `source`) VALUES ('test.tpl', "2010-12-25 22:00:00", '{$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'}
-
-         
-
-See also [`registerResource()`](#api.register.resource),
-[`unregisterResource()`](#api.unregister.resource).