In PHP, write a program that deals a random poker hand. Your program does not need to score the hand. It simply needs to deal out a hand of five random cards. Use an array to handle the deck.

A minimum of two functions must be written to complete this problem (Example: buildArray(), displayHand()). Put your functions in one PHP file named mylibrary.php. Then make another PHP file mypage.php that loads the PHP file with the buildArray() and displayHand() functions in mylibrary.php using the include statement.