Driver program to test above function
$ cost = array ( array ( 0 , 15 , 80 , 90 ) , array ( INF , 0 , 40 , 50 ) , array ( INF , INF , 0 , 70 ) , array ( INF , INF , INF , 0 ) ) ; echo " The ▁ Minimum ▁ cost ▁ to ▁ reach ▁ station ▁ " , $ N , " ▁ is ▁ " , minCost ( $ cost ) ; ? >