/*
A standard deck of 52 playing cards consists of four suits:
spades (♠), hearts (♥), diamonds (♦), and clubs (♣).
Each suit contains 13 ranks:
Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, King.
Cards of spades and clubs are black, while hearts and diamonds are red.
Color is informational only — it does not affect shuffling or random selection.
*/
/*
This program picks 5 random cards from a standard 52‑card deck.
It uses:
- Arrays to store ranks, suits, and the deck
- shuffle() for efficient randomization (PHP’s built‑in Fisher–Yates)
- Functions for clean structure
Algorithm:
1. Build the deck (52 strings).
2. Shuffle using shuffle().
3. Print the first 5 cards.
*/
function buildDeck(): array {
$ranks = ["2","3","4","5","6","7","8","9","10","J","Q","K","A"];
$suits = ["Clubs", "Diamonds", "Hearts", "Spades"];
$deck = [];
// Combine each rank with each suit → 52 unique cards
foreach ($suits as $suit) {
foreach ($ranks as $rank) {
$deck[] = "$rank of $suit";
}
}
return $deck;
}
function shuffleDeck(array &$deck): void {
// PHP's shuffle() uses Fisher–Yates internally
shuffle($deck);
}
// Step 1: Build the deck
$deck = buildDeck();
// Step 2: Shuffle the deck
shuffleDeck($deck);
// Step 3: Draw the first 5 cards
echo "Your 5 random cards:\n";
for ($i = 0; $i < 5; $i++) {
echo $deck[$i] . "\n";
}
/*
run:
Your 5 random cards:
9 of Hearts
5 of Spades
4 of Clubs
Q of Spades
J of Clubs
*/
