MageConfigSync\Magento::getDatabaseReadAdapter PHP Méthode

    public function getDatabaseReadAdapter()
    {
        $this->getMagentoEnvironment();
        return \Mage::getModel('core/resource')->getConnection('core_read');
    }

 /**
  * @return array
  */
 public function getAllValues()
 {
     $read = $this->_magento->getDatabaseReadAdapter();
     $query = $read->select()->from($this->_table_name, array('scope', 'scope_id', 'path', 'value'));
     return $read->fetchAll($query);
 }