creating matches

[chriscloyd]

I'm pretty good with coding but am getting stumphed.

IDEA - Automatch teams

count how many teams are in the teams table

then choose two of them and insert them into the match table

but if they are already in there choose two different numbers and do this till all the teams have been scheduled a match

[chriscloyd]

i did a loop but it just keep choosing the same numbers

[PFMaBiSmAd]

The following code will form all possible "rotations" of the teams that are listed in the array -

 

<?php
$teams = array(
        "Team 1",
        "Team 2",
        "Team 3",
        "Team 4",
        "Team 5",
        "Team 6",
        "Team 7",
        "Team 8",
        "Team 9",
        "Team 10"
        );

    $numteams = sizeof($teams);
    $days = array();
    $team_list = array_keys($teams);
    $tmp_list = array_splice($team_list, 1, sizeof($team_list) - 1);
    $count = sizeof($tmp_list) + 1;
    $days = array();
    
    for ($i = 0;$i < $numteams - 1;$i++) {
        $days[$i] = array();
        $day_list = array_merge(array($team_list[0]), $tmp_list);
        for ($j = 0;$j < $count / 2;$j++) {
            $days[$i][] = $teams[$day_list[$j]] . ' vs ' . $teams[$day_list[$count - $j - 1]];
        }
        // rotate $tmp_list
        $elm = array_shift($tmp_list);
        array_push($tmp_list, $elm);
    }
    echo "<pre>";
    print_r($days);
    echo "</pre>";  
?>

[chriscloyd]

Okay well i dont want to create a match for everyone for example i will run the match creator once a week for each season then when i run it say there is 10 teams

 

the ten teams will be matched to other teams that they have not played

 

questions?

 

please help

[chriscloyd]

maybe i should explian it better

team 10 teams and create five matches

check to see if teams have been matched up already in previous weeks

or see if they are already matches up agasint a different team this week

[PFMaBiSmAd]

If you don't want any duplicates, you must create all possible combinations at one time at the beginning and then use the groupings that that code produces, one different group per week.

 

If you attempt to do this by random picking, as you get closer and closer to the end, you will find that you cannot match up teams that have not played each other and you will have more and more teams sitting out that week.