table prefix snippet in ZF

table_prefix.php

/* bootstrap file */
define('_TABLE_PREFIX', $config->db->table->prefix);

class Extend_Db_Table extends Zend_Db_Table_Abstract
{
     /**
     * This will automatically set table name with prefix from bootstrap file
     * @return void
     */
     protected function _setupTableName()
     {
         parent::_setupTableName(); 
         if(defined('_TABLE_PREFIX')) {
             $this->_name = _TABLE_PREFIX . $this->_name;
         }
     }
}