如何在PHP中组合具有相同关联键值的数组？

我试图通过wordpress中的帖子循环创建一个数组，并构建一个由人、他们玩过的游戏以及他们每场游戏发布的分数组成的数组

我当前的代码：

    $world_rank = [];
    while ( $the_query->have_posts() ) : $the_query->the_post();
          $category = get_the_category();
          $cat_name = $category[0]->cat_name;
          $score = get_field('score');
          $author = get_the_author();

          $array_size = sizeof($world_rank[$author]['games']);
          if( $array_size < 1 ){
            $world_rank[$author]['games'][] = ['name' =>  addslashes($cat_name), 'scores' => [$score] ];
          }else{
            // loop through the array and see if they have been similar game names if so, add them to push array
            $i = 0;
            foreach($world_rank[$author]['games'] as $game){
              if($game['name'] == $cat_name){
                echo 'Same name ' .$game['scores']. ' score is '.$score.'</br>';
                array_push($game['scores'], $score);
// this doesn't seem to work
                // break;
              }
              else if($game['name'] !== $cat_name && $i == $array_size - 1 ){ //
                // if the names are not the same create a new array for the other game
                $world_rank[$author]['games'][] = ['name' =>  addslashes($cat_name), 'scores' => [$score] ];
              }
              $i++;
            }
          }
        endwhile;

如何使world_rank数组中的“Candy”值为1数组，因为“Candy”值在数组中出现两次，并将“Candy”键的分数合并。所以现在让它看起来像：

$world_rank = array (
  'frantheman' => 
  array (
    'games' => 
    array (
      0 => 
      array (
        'name' => 'Candy',
        'scores' => 
        array (
          0 => '23',
          1 => '25' 
        ),
      ),
      1 => 
      array (
        'name' => 'PopCorn',
        'scores' => 
        array (
          0 => '25',
        ),
      ),
      2 => 
      array (
        'name' => 'Chocolate',
        'scores' => 
        array (
          0 => '5',
        ),
      )
  );

---

如您所见，在新的数组中，“Candy”有两个用于分数的数组。在此方面的任何帮助都将不胜感激。谢谢。

您的代码中有一个小错误。如果你想在foreach中修改$game，你需要通过引用遍历它。你只需要做一件事：

foreach($world_rank[$author]['games'] as &$game){

然后实际上修改实际分数数组，而不创建本地副本。（如果您想了解更多信息，请使用Google PHP copy on write）

您还需要break语句，否则将在循环结束条件中创建另一个元素。但你已经把它放在了正确的地方；联合国对此发表评论

备选方案

---

我在下面添加的选项是错误的删除。

编辑在与OP反复讨论之后，我重写了我的答案和OP的原始脚本

这是可测试脚本：（）

输出：

array (
  'frantheman' => 
  array (
    'Candy Crush' => 
    array (
      'scores' => 
      array (
        0 => 11,
        1 => 5,
        2 => 4,
        3 => 23,
        4 => 25,
        5 => 0,
      ),
      'high_score' => 25,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
    'Blackjack' => 
    array (
      'scores' => 
      array (
        0 => 68,
        1 => 0,
        2 => 90,
      ),
      'high_score' => 90,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
    'Killer Instinct' => 
    array (
      'scores' => 
      array (
        0 => 25,
      ),
      'high_score' => 25,
      'rank' => 1,
      'efficiency' => 10.0,
    ),
    'Grand Theft Auto V' => 
    array (
      'scores' => 
      array (
        0 => 5,
      ),
      'high_score' => 5,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
    'Counter-Strike: Global Offensive' => 
    array (
      'scores' => 
      array (
        0 => 67,
      ),
      'high_score' => 67,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
    'Lawbreakers' => 
    array (
      'scores' => 
      array (
        0 => 456,
      ),
      'high_score' => 456,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
  ),
  'Braconda' => 
  array (
    'Overwatch' => 
    array (
      'scores' => 
      array (
        0 => 24459,
        1 => 70,
      ),
      'high_score' => 24459,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
  ),
  'ScotGamer1' => 
  array (
    'Overwatch' => 
    array (
      'scores' => 
      array (
        0 => 24359,
      ),
      'high_score' => 24359,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
    'Blackjack' => 
    array (
      'scores' => 
      array (
        0 => 21,
      ),
      'high_score' => 21,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
    'Grand Theft Auto V' => 
    array (
      'scores' => 
      array (
        0 => 23386,
      ),
      'high_score' => 23386,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
    'Dota 2' => 
    array (
      'scores' => 
      array (
        0 => 2560,
      ),
      'high_score' => 2560,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
  ),
  'John' => 
  array (
    'Counter-Strike: Global Offensive' => 
    array (
      'scores' => 
      array (
        0 => 75656,
        1 => 19000,
      ),
      'high_score' => 75656,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
    'Team Fortress 2' => 
    array (
      'scores' => 
      array (
        0 => 8686,
        1 => 7755,
      ),
      'high_score' => 8686,
      'rank' => 1,
      'efficiency' => 10.0,
    ),
    'Dota 2' => 
    array (
      'scores' => 
      array (
        0 => 86766,
        1 => 12345,
      ),
      'high_score' => 86766,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
    'Candy Crush' => 
    array (
      'scores' => 
      array (
        0 => 9999999999999999,
        1 => 66,
      ),
      'high_score' => 9999999999999999,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
    'PLAYERUNKNOWN’S BATTLEGROUNDS' => 
    array (
      'scores' => 
      array (
        0 => 42,
      ),
      'high_score' => 42,
      'rank' => 1,
      'efficiency' => 10.0,
    ),
    'Lawbreakers' => 
    array (
      'scores' => 
      array (
        0 => 5345345,
        1 => 54321,
      ),
      'high_score' => 5345345,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
  ),
)

这是我的代码片段的WP实现：

$user_game_stats=[];  // this will be the final output array containing all statistics
while($the_query->have_posts()){
    $the_query->the_post();
    $game = addslashes(get_the_category()[0]->cat_name);
    $user = get_the_author();
    $score=intval(get_field('score'));

    $user_game_stats[$user][$game]['scores'][]=$score;
    if(!isset($user_game_stats[$user][$game]['high_score']) || $score>$user_game_stats[$user][$game]['high_score']){
        $user_game_stats[$user][$game]['high_score']=$score;
        $user_high_scores_by_game[$game][$user]=$score;  // this is a temporary array for calculating rank
    }
}

// a second loop is essential because the rank calculations involve the users' high scores and player count per game
foreach($user_high_scores_by_game as $game=>$user_scores){
    $total_game_users=count($user_scores);
    arsort($user_scores);  // sort the users by their high score in DESC order and preserve the keys (usernames)
    $ordered_users=array_keys($user_scores);  // high scores are no longer required, we just want to determine rank
    foreach($ordered_users as $number=>$user){
        $user_game_stats[$user][$game]['rank']=++$number;  // starts from zero so $number is modified/increased by one for human-friendly rank
        $user_game_stats[$user][$game]['efficiency']=$number / ($total_game_users * .1); // I don't like "efficiency" but can't offer a better term
        // you may want to introduce rounding on the efficiency calculation
    }
}
var_export($user_game_stats);

---

请提供代码，您如何创建第一个array@Tarasovych它已经更新。谢谢你的评论让我把它放进去，不像其他人那样投反对票。你必须用

array_push（）

，使用

foreach（）

把所有游戏的分数放进exist数组，谢谢，但我就是这么做的。在这里：f（$game['name]=$cat_name）{echo'同名。$game['scores]“'score is”“$score”“
”；array_push（$game['scores'，$score）；//这似乎不起作用//break；}如果我在该条件下执行回显，我会看到它在“Candy”name键处添加到数组中。然而，当我打印数组的最终结果时，我得到了问题中显示的第一个输出。

array (
  'frantheman' => 
  array (
    'Candy Crush' => 
    array (
      'scores' => 
      array (
        0 => 11,
        1 => 5,
        2 => 4,
        3 => 23,
        4 => 25,
        5 => 0,
      ),
      'high_score' => 25,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
    'Blackjack' => 
    array (
      'scores' => 
      array (
        0 => 68,
        1 => 0,
        2 => 90,
      ),
      'high_score' => 90,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
    'Killer Instinct' => 
    array (
      'scores' => 
      array (
        0 => 25,
      ),
      'high_score' => 25,
      'rank' => 1,
      'efficiency' => 10.0,
    ),
    'Grand Theft Auto V' => 
    array (
      'scores' => 
      array (
        0 => 5,
      ),
      'high_score' => 5,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
    'Counter-Strike: Global Offensive' => 
    array (
      'scores' => 
      array (
        0 => 67,
      ),
      'high_score' => 67,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
    'Lawbreakers' => 
    array (
      'scores' => 
      array (
        0 => 456,
      ),
      'high_score' => 456,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
  ),
  'Braconda' => 
  array (
    'Overwatch' => 
    array (
      'scores' => 
      array (
        0 => 24459,
        1 => 70,
      ),
      'high_score' => 24459,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
  ),
  'ScotGamer1' => 
  array (
    'Overwatch' => 
    array (
      'scores' => 
      array (
        0 => 24359,
      ),
      'high_score' => 24359,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
    'Blackjack' => 
    array (
      'scores' => 
      array (
        0 => 21,
      ),
      'high_score' => 21,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
    'Grand Theft Auto V' => 
    array (
      'scores' => 
      array (
        0 => 23386,
      ),
      'high_score' => 23386,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
    'Dota 2' => 
    array (
      'scores' => 
      array (
        0 => 2560,
      ),
      'high_score' => 2560,
      'rank' => 2,
      'efficiency' => 10.0,
    ),
  ),
  'John' => 
  array (
    'Counter-Strike: Global Offensive' => 
    array (
      'scores' => 
      array (
        0 => 75656,
        1 => 19000,
      ),
      'high_score' => 75656,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
    'Team Fortress 2' => 
    array (
      'scores' => 
      array (
        0 => 8686,
        1 => 7755,
      ),
      'high_score' => 8686,
      'rank' => 1,
      'efficiency' => 10.0,
    ),
    'Dota 2' => 
    array (
      'scores' => 
      array (
        0 => 86766,
        1 => 12345,
      ),
      'high_score' => 86766,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
    'Candy Crush' => 
    array (
      'scores' => 
      array (
        0 => 9999999999999999,
        1 => 66,
      ),
      'high_score' => 9999999999999999,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
    'PLAYERUNKNOWN’S BATTLEGROUNDS' => 
    array (
      'scores' => 
      array (
        0 => 42,
      ),
      'high_score' => 42,
      'rank' => 1,
      'efficiency' => 10.0,
    ),
    'Lawbreakers' => 
    array (
      'scores' => 
      array (
        0 => 5345345,
        1 => 54321,
      ),
      'high_score' => 5345345,
      'rank' => 1,
      'efficiency' => 5.0,
    ),
  ),
)

$user_game_stats=[];  // this will be the final output array containing all statistics
while($the_query->have_posts()){
    $the_query->the_post();
    $game = addslashes(get_the_category()[0]->cat_name);
    $user = get_the_author();
    $score=intval(get_field('score'));

    $user_game_stats[$user][$game]['scores'][]=$score;
    if(!isset($user_game_stats[$user][$game]['high_score']) || $score>$user_game_stats[$user][$game]['high_score']){
        $user_game_stats[$user][$game]['high_score']=$score;
        $user_high_scores_by_game[$game][$user]=$score;  // this is a temporary array for calculating rank
    }
}

// a second loop is essential because the rank calculations involve the users' high scores and player count per game
foreach($user_high_scores_by_game as $game=>$user_scores){
    $total_game_users=count($user_scores);
    arsort($user_scores);  // sort the users by their high score in DESC order and preserve the keys (usernames)
    $ordered_users=array_keys($user_scores);  // high scores are no longer required, we just want to determine rank
    foreach($ordered_users as $number=>$user){
        $user_game_stats[$user][$game]['rank']=++$number;  // starts from zero so $number is modified/increased by one for human-friendly rank
        $user_game_stats[$user][$game]['efficiency']=$number / ($total_game_users * .1); // I don't like "efficiency" but can't offer a better term
        // you may want to introduce rounding on the efficiency calculation
    }
}
var_export($user_game_stats);