尝试访问数组值时PHP非法字符串偏移

Question

我可能在这里打得比我的体重略高，或者它可能是一个非常简单的问题，有一个简单的解决方案。

我的问题

1. 我无法在 foreach() 中访问数组键值
2. 在函数中创建数组时，数组似乎在重复，创建时会进行两次迭代（如下图所示）

第 1 步：创建数组

     $results = $stmnt->fetchAll();
            if ($stmnt->rowCount() > 0) {
                $totalCorrectPicks = 0;
//--->HERE ARRAY KEYS ARE CREATED FROM QUERYING DB
                foreach ($results as $index => $result) {
                    $returnResult = array('picked' => $result['team'], 'homeScore' => $result['homeScore'], 'awayScore' => $result['awayScore'], 'homeTeam' => $result['homeTeam'],
                        'awayTeam' => $result['awayTeam'], 'score' => $result['score']);
                }//end foreach
//------> HERE ELEMENTS GETS APPENDED TO ARRAY
                    $pickedTeam = $result['team'];
                    if ($result['homeScore'] > $result['awayScore']) {
                        $matchOutcome = $result['homeTeam'];
                        $matchScore = $result['homeScore'];
                        $returnResults['matchOutcome'] = $matchOutcome;
                        $returnResults['matchScore'] = $matchScore;
                    }
                    if ($result['awayScore'] > $result['homeScore']) {
                        $matchOutcome = $result['awayTeam'];
                        $matchScore = $result['awayScore'];
                        $returnResults['matchOutcome'] = $matchOutcome;
                        $returnResults['matchScore'] = $matchScore;
                    }
                    if ($pickedTeam === $matchOutcome) {
                        $totalCorrectPicks++;
                        $margin = abs($matchScore - $result['points']);
                        //INDEX WILL START AT 0 SO WE ADD ONE TO $INDEX
                        $nrGames = $index + 1;
                        $returnResults['totatlCorrectPicks'] = $totalCorrectPicks;
                        $returnResults['margin'] = $margin;
                        $returnResults['nrGames'] = $nrGames;
                    }
                    elseif ($pickedTeam !== $matchOutcome) {
                        $margin = 'wrongPick';
                        $returnResults['margin'] = $margin;
                }
            }
        }
        if(isset($returnResults)){
            print_r($returnResults);
            return $returnResults;
        }
        return false;
    }

STEP 2 调用函数并使用数组；导致非法字符串偏移

 <?php $picks = checkUserPicks('5');
        foreach ($picks as $index => $pick){
        ?>
        <tr>
            <td>
            <?php echo $pick['picked']; ?>
            </td>
            <td>
             <?php echo $pick['matchOutcome']; ?>
            </td>
            <td>
                <?php echo $pick['margin']; ?>
            </td>
        </tr>
        <?php } ?>

注意：您可以在上面发布的图像中看到数组值。

问题

1) 为什么数组看起来像是重复的（见图）？

2) 如何修复非法字符串偏移量以及导致它的原因？

谢谢

更新

从$returnResults[] 中删除[] 后的新数组结构

Answer 1

foreach 循环结束后，matchOutcome, matchScore 等被附加到数组中。它不应该在循环内吗？

如果您期望超过一行，那么您需要通过维护其索引来创建数组，如下所示：

$returnResults = array(); // Initialize array
foreach ($results as $index => $result) {
    $returnResults[$index] = array('picked' => $result['team'], 'homeScore' => $result['homeScore'],
    'awayScore' => $result['awayScore'], 'homeTeam' => $result['homeTeam'],
    'awayTeam' => $result['awayTeam'], 'score' => $result['score']);

    //------> HERE ELEMENTS GETS APPENDED TO ARRAY
    $pickedTeam = $result['team'];
    if ($result['homeScore'] > $result['awayScore']) {
        $matchOutcome = $result['homeTeam'];
        $matchScore = $result['homeScore'];
        $returnResults[$index]['matchOutcome'] = $matchOutcome;
        $returnResults[$index]['matchScore'] = $matchScore;
    }
    .
    .
    elseif ($pickedTeam !== $matchOutcome) {
        $margin = 'wrongPick';
        $returnResults[$index]['margin'] = $margin;
    }
}//end foreach