Coinizer breaks up coin amount into the smallest possible number of coins.

Sample output:

Input:
Coin amount: 13
Coint types: 3,7

Output:
array(2) {
  [0]=>
  string(32) "Coin type: 7, Number of coins: 1"
  [1]=>
  string(32) "Coin type: 3, Number of coins: 2"
}