Question

<?php
        if (isset($_POST['Roll!'])) {
                    $sides = $_POST['sides'];
                    $rolled = rand(1,$sides);

                    echo "$rolled was rolled by the dice, it is now out!";
        }
?>

This is the code I currently have. After rolling that number, however, I want it to roll again, but without the previously rolled number, until it has rolled all number except one, which would be the winning number. I have no idea how to go about doing that. Any ideas?

EDIT: I’m sorry, I should have been more clear, thank you all for the help so far, but I also need to echo each number rolled, such as

echo "$rolledArray[0] was rolled, it lost.\n";
echo "$rolledArray[1] was rolled, it lost.\n";
echo "$rolledArray[2] was rolled, it lost.\n";
echo "$rolledArray[3] was rolled, it lost.\n";
echo "$rolledArray[x] was rolled, it lost.\n";
echo "$rolledArray[x] was rolled, it lost.\n";
echo "$rolledArray[50?] was rolled, it lost.";

EDIT AGAIN: Also I only want them to have to click Roll! once, not multiple times until they’ve rolled all the numbers, meaning no need for session, I think, though I could be wrong, most of you are clearly more experienced than me.

Sorry, I should have mentioned that before as well.

Answer 1

To answer your direct question:
You can put all of the possible numbers into an array, and get a random index for that array. Once you have an index, remove the item from the array and redo the random over the smaller array:

$possible = range(1, $_POST['sides']);     // build the possible values
$rolledIndex = rand (0, count($possible)); // get a random index
$rolled = $possible[$rolledIndex];         // get the rolled number

unset($possible[$rolledIndex]);            // and remove the rolled nuber

// now you can simply redo the random:
$rolledIndex = rand (0, count($possible)); // get a random index on the smaller array
$rolled = $possible[$rolledIndex];         // get the 2nd rolled number

However, If you want to have a random order on the dice throws, simply use this:

// generate an array with all values from 1 to the posted value (e.g. 1,2,3,4,5,6)
$possible = range(1, $_POST['sides']);  

// this reorders the array by random (e.g. 4,3,1,5,2,6)
$throwOrder = $possible;
shuffle($throwOrder); 
print_r($throwOrder);

Now you can simply iterate over the $throwOrder array and have a random order of dice throws:

Array (
    0 => 4,
    1 => 3,
    2 => 1,
    3 => 5,
    4 => 2,
    5 => 6
)

Edit To get the desired output from the second method, simply do this:

// get the last index of the array of thrown dices
$lastIndex = count($throwOrder)-1;
// iterate through the array, printing the results
foreach ($throwOrder as $key => $rolled) {
    // check if the current key matches the last key in the array
    if ($key != $lastIndex) {
        // if not, the number has lost
        echo $rolled, " was rolled, it lost.\n";
    } else {
        // we have reached the last element of the array
        echo $rolled, " was the last, it won.\n";
    }
}