main php file added

Author: rishiv3

engine_change.php

@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * @package   Engine Change
+ * @author    Rishi Vishwakarma www.rishinc.com
+ * @copyright Copyright (C) 2016 www.rishinc.com
+ * @license   http://www.gnu.org/licenses/gpl-2.0.html GNU/GPLv2 only
+ */
+
+// no direct access
+defined('_JEXEC') or die('Restricted access');
+
+jimport('joomla.plugin.plugin');
+
+class plgSystemEngine_change extends JPlugin
+{
+
+    public function onAfterInitialise()
+    {
+        //init vars
+        $engine_change = $this->params->get('engine_change');
+        $opposite = $this->getEngineType($engine_change);
+
+        //set database query
+        $db = JFactory::getDbo();
+        $query = $db->getQuery(true);
+        $query->select('TABLE_NAME');
+        $query->from('INFORMATION_SCHEMA.TABLES');
+
+        $query = "SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = '"
+                . JFactory::getConfig()->get("db")
+                . "' AND ENGINE = '" . $opposite . "'";
+
+        if ($db->setQuery($query))
+        {
+            $results = $db->loadObjectList();
+        }
+        else
+        {
+            return;
+        }
+
+        if (!empty($results))
+        {
+            //cycle through tables and reset the Engine
+            foreach ($results as $result)
+            {
+                $tableName = $result->TABLE_NAME;
+                $newQuery = "ALTER TABLE " . $tableName . " ENGINE=" . $engine_change;
+
+                try
+                {
+                    $db->setQuery($newQuery);
+                    $db->execute();
+                } catch (Exception $e)
+                {
+                    /* echo $e->getMessage(); */
+                }
+            }
+        }
+    }
+
+
+    //helps set init vars
+    protected function getEngineType($ec) // var $var = engine_change
+    {
+        if ($ec == 'MyISAM')
+        {
+            return 'InnoDB';
+        }
+        else
+        {
+            return 'MyISAM';
+        }
+    }
+
+}