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+++ b/library/smarty/demo/plugins/resource.mysql.php
@@ -0,0 +1,76 @@
+<?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");
+        } 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);
+    }
+}