What is the best approach to dividing a PHP array of game pairings into multiple game days while ensuring each team alternates between home and away games?

To divide a PHP array of game pairings into multiple game days while ensuring each team alternates between home and away games, you can create a scheduling algorithm that considers the constraints of alternating home and away games for each team. One approach is to use a round-robin scheduling algorithm that generates a balanced schedule for all teams involved. 

function generateSchedule($teams) {
    $numTeams = count($teams);
    $numDays = $numTeams - 1;
    
    $schedule = [];
    
    for ($day = 0; $day < $numDays; $day++) {
        $games = [];
        
        for ($i = 0; $i < $numTeams / 2; $i++) {
            $team1 = $teams[$i];
            $team2 = $teams[$numTeams - 1 - $i];
            
            if ($day % 2 == 0) {
                $games[] = [$team1, $team2];
            } else {
                $games[] = [$team2, $team1];
            }
        }
        
        $schedule[] = $games;
        
        // Rotate teams for next day
        $lastTeam = array_pop($teams);
        array_splice($teams, 1, 0, $lastTeam);
    }
    
    return $schedule;
}

$teams = ['Team A', 'Team B', 'Team C', 'Team D'];
$schedule = generateSchedule($teams);

print_r($schedule);

Keywords

PHP array game pairings alternating home and away games

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