Randon Pair up of array items?

[TEENFRONT]

Hey guys

 

Looking for some quick help if at all possible.

 

Basically, i have a bunch of numbers in my database all seperated with a comma.

 

So my "player" field has this in it

 

1245, 56473, 484933, 929121, 040485, 03303

 

etc, just a bunch of "player IDs"...

 

Basically i want to put these IDs into an array (i think) by seperating the commas.

 

Then, the main thing, is i want to pair up the player IDs with out ones, random.

 

Like

 

"PLAYERID  VS.  PLAYERID"

 

i dont fully understand arrays if im honest.. i know how to randomize them and echo out them in a random order, but i need to pair each seperate id up with another id.

 

I just cannot get my head round how to do it.

 

hoping i explained ok, its 7 in the morning and iv been awake all night lol.

 

Thanks!!

[oni-kun]

$ids = '1245, 56473, 484933, 929121, 040485, 03303'; //From DB row
$playerIDs = explode(', ' , $ids); //Explode to clean array

 

For starters.. Are you wanting to pair the ID's with eachother, or is there another set of players?

[TEENFRONT]

Each ID needs pairing with another from the same set of IDs.

 

So in your starter example each of the $playerIDs items needs pairing with another $playerIDs

 

I basically want it to have an end output of

 

"$playerIDs[random] VS. $playerIDs[random]"

 

but once 2 IDs have been paired, they cannot be paired again with other IDs.

 

I'm trying to create like a match roster.

[Fergal Andrews]

This example takes the Id's as a string. I you are getting the Ids from a database the result set will already be an array, so skip to the Randomize array part of the code. The array created in this example will be an uneven number so someone will not get to play, but that is unavoidable.

 

 

<?php

$playerIds = '3847, 3795, 80880, 3453, 56456, 27431, 82903, 17879, 789222, 9839832, 90823432, 234234, 1232323';

 

$playerIdsArray = explode(',' ,$playerIds);

 

// Randomize array

shuffle($playerIdsArray);

 

$loopCount = floor(count($playerIdsArray) / 2);

 

for ($i = 0; $i < $loopCount; $i++) {

    $player1 = array_pop($playerIdsArray);

    $player2 = array_pop($playerIdsArray);

 

    // output to screen

    echo "Player Id: " . $player1 . " Vs Player Id: " . $player2 . "<br />"; 

   

}

 

?>

 

[salathe]

You could also use array_chunk to split the list of player IDs into pairs. Like:

 

$list = '3847, 3795, 80880, 3453, 56456, 27431, 82903, 17879, 789222, 9839832, 90823432, 234234, 1232323';
// Split into array of IDs
$players = explode(', ', $list);
// Shuffle the array
shuffle($players);
// Chunk into pairs
$pairs = array_chunk($players, 2);
foreach ($pairs as $pair) {
// If not pair (i.e. list had uneven number of IDs) skip
if ( ! isset($pair[1])) {
	continue;
}

printf("Player Id: %d Vs Player Id: %d\n", $pair[0], $pair[1]);
}

[TEENFRONT]

Hey guys thanks for this. Il test it as soon as I wake up properly and il report back!

 

Both Look great though!