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