PHP尝试访问数组值时出现非法字符串偏移

Question

我可能会在这里略微超过我的体重，或者通过一个简单的解决方案可能是一个非常简单的问题。

我的问题

1. 我无法访问foreach（）
中的数组键值
2. 在函数中创建数组时，似乎数组是重复的，在创建时会进行双重迭代（如下图所示）



第1步：阵列创建

     $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;
    }

步骤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：您可以在上面张贴的图片中看到数组值。

问题

1）为什么看起来数组是重复的（见图）？

2）如何修复非法字符串偏移及其原因？

由于

更新

从[]
中删除$returnResults[]后的

新阵列结构

Answer 1

foreach循环结束后，matchOutcome, matchScore等会附加到数组中。它不应该在循环中吗？

如果您期望多行，则需要通过维护索引来创建数组，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