// check if user select click a link
		if (isset($_POST['link']) && $config_link['status'] == 'on') {
			$opts = array(
            "http" => array(
                "method" => "GET",
                "header" => "Content-type: application/x-www-form-urlencoded\r\n",
                "timeout" => 6,
            ),
        );
        $context = stream_context_create($opts);
			$key = get_token(10); 
			for ($i=1; $i <= count($link) ; $i++) { 
				if (!isset($_COOKIE[$i])) {
					log_user($address, $ip);
					$url = $link[$i];
					$go = str_replace("{key}",$key,$url);
					$ShortenedResult = @json_decode(file_get_contents( $go, false, $context), true);
					while (empty($ShortenedResult['shortenedUrl']) {
						$i++;
						$url = '';
						$go = '';
						$ShortenedResult = '';
						$url = $link[$i];
						$go = str_replace("{key}",$key,$url);
						$ShortenedResult = @json_decode(file_get_contents( $go, false, $context), true);
					}
					setcookie($i, 'visited', time() + 0);
					header("Location: ". $ShortenedResult['shortenedUrl']);
					$mysqli->query("INSERT INTO link (bitcoin_address, sec_key) VALUES ('$address', '$key')");
					echo '<script> window.location.href="' .$ShortenedResult['shortenedUrl']. '"; </script>';
					die();
				}
			}
			
		} else {
			if (isset($_COOKIE['ref']) && $address !== $_COOKIE['ref']) {
				$ref = $mysqli->real_escape_string($_COOKIE['ref']);
			}
			$send = send_hub($address, $ip);
			if ($send['success'] == true) {
				log_user($address, $ip);
				$send_reward = 1;
				UpdateClaimLimit($address);	
			}
			$alert = "<center><img style='max-width: 200px;' src='template/img/trophy.png'><br>{$send['html']}</center>"; 
		}