if ('4') { $prev = 'http://'.$_SERVER['HTTP_HOST'].'/search/ass/4'; } ?> if ('4' == '1') { $prev = 'http://'.$_SERVER['HTTP_HOST'].'/search/ass/1'; } ?> if ('6' && '6' <= 10) { $next = 'http://'.$_SERVER['HTTP_HOST'].'/search/ass/6'; } ?>