initialise(); jimport( 'joomla.plugin.plugin' ); JPlugin::loadLanguage( 'com_alpharegistration' ); if(isset($_POST['couponcode'])) { $couponcode = $_POST['couponcode']; $db =& JFactory::getDBO(); $query = "SELECT id FROM #__alpha_userpoints_coupons WHERE `couponcode`='".trim($couponcode)."' LIMIT 1"; $db->setQuery( $query ); $couponcodeexist = $db->loadResult(); if( !$couponcodeexist ) { echo ''.JText::_( 'ARG_THIS_COUPON_CODE_IS_NOT_AVAILABLE' ).''; } else { echo 'OK'; } } ?>