Generate match keys between teams using a PHP array

Question

Opa!!

I have the following array on php, need to create a confrontation between teams and teams that are from the same group/array example Time 01 and Time 02 can not face each other in the first round.

I thought to check if the element are from the same array if yes takes one and passes to the next, only I could not do this check. I don’t know if there’s a function for that yet!!

If anyone has a tip on how to do I’m grateful!!

array(3) {
  [0]=>
  array(2) {
    [2]=>
    string(7) "Time 01"
    [3]=>
    string(7) "Time 02"
  }
  [1]=>
  array(1) {
    [0]=>
    string(7) "Time 03"
  }
  [2]=>
  array(1) {
    [1]=>
    string(7) "Time 04"
 }
}

Answer 1

If I understand correctly you want to define all the pranks without repetition between teams of groups different.

This pairing can be achieved by having a loop run through all teams from the start ($i=1,...,n) and a second loop that traverses all teams from the first loop on ($j=$i,...,n).

I recommend you try to do, because it is a simple task and, only if you do not, look at the following solution:

$grupo1 = array("Time 01","Time 02");
$grupo2 = array("Time 03");
$grupo3 = array("Time 04");
$array_grupos = array($grupo1,$grupo2,$grupo3);
$n_de_grupos = count($array_grupos);    


$jogos= array();
for($i=0;$i<$n_de_grupos;$i++){
    for($j=$i+1;$j<$n_de_grupos;$j++){
        $grupoA = $array_grupos[$i];
        $grupoB = $array_grupos[$j];

        foreach($grupoA as $timeA){
            foreach($grupoB as $timeB){
                echo $timeA.$timeB.'<br>'; //imprime na tela 
                $jogos[]=array($timeA,$timeB);  //ou armazena em vetor
            }
        }
    }
}

//saída do echo:
Time 01Time 03
Time 02Time 03
Time 01Time 04
Time 02Time 04
Time 03Time 04