public static function getExtensions($opt_name = "", $key = "")
 {
     if (empty($opt_name)) {
         Redux::getAllExtensions();
         if (empty($key)) {
             return self::$extension_paths;
         } else {
             if (isset(self::$extension_paths[$key])) {
                 return self::$extension_paths[$key];
             }
         }
     } else {
         if (empty(self::$uses_extensions[$opt_name])) {
             Redux::getInstanceExtensions($opt_name);
         }
         if (empty(self::$uses_extensions[$opt_name])) {
             return false;
         }
         $instanceExtensions = array();
         foreach (self::$uses_extensions[$opt_name] as $extension) {
             $class_file = end(self::$extensions[$extension]);
             $name = str_replace('.php', '', basename($extension));
             $extension_class = 'ReduxFramework_Extension_' . $name;
             $instanceExtensions[$extension] = array('path' => $class_file, 'class' => $extension_class, 'version' => Redux::getFileVersion($class_file));
         }
         return $instanceExtensions;
     }
     return false;
 }
                            </tr>
                        <?php 
        }
        $ext = $data['extensions'];
        if (!empty($ext) && is_array($ext)) {
            ?>
                            <tr>
                                <td data-export-label="Extensions">Extensions</td>
                                <td class="help"><?php 
            echo '<a href="#" class="redux-hint-qtip" qtip-content="' . esc_attr__('Indicates the installed Redux extensions and their version numbers.', 'redux-framework') . '">[?]</a>';
            ?>
</td>
                                <td>
                                    <?php 
            foreach ($ext as $name => $arr) {
                $ver = Redux::getFileVersion($arr['path']);
                ?>
                                            <?php 
                echo '<a href="http://reduxframework.com/extensions/' . str_replace(array('_'), '-', $name) . '" target="blank">' . ucwords(str_replace(array('_', '-'), ' ', $name)) . '</a> - ' . $ver;
                ?>
<br/>
                                        <?php 
            }
            ?>
                                </td>
                            </tr>
                        <?php 
        }
        ?>
                    </tbody>
                </table>