多维数组是否会导致403禁止错误？

Question

假设我有一个带有问题的php哈希，作为子句的关键，将答案作为其正确性值的关键：

$questions = array(
    //1
    "What?" => array(
        "Answer A" => "false", 
        "Answer B" => "false", 
        "Answer C" => "true", 
        "Answer D" => "false", 
        "expl" => "**C is the correct answer."//also holds the explanations of these questions
    ),
    "When?" => array(
        "Answer A" => "false", 
        "Answer B" => "false", 
        "Answer C" => "false", 
        "Answer D" => "true", 
        "expl" => "**D is the correct answer, because..."
     ),

    ...
    ...
    ...

    //12
    "How?" => array(
        "Answer A" => "true", 
        "Answer B" => "false", 
        "Answer C" => "false", 
        "Answer D" => "false", 
        "expl" => "**A is the correct answer."
    )
);

我想根据用户之前使用此功能的信息输出这些问题的子序列：

function checkpoint($type){
    global $questions;

    //defined the subsequences for each type
    $sub1 = array(1, 3, 4, 9, 5, 6, 10, 8, 11, 12);
    $sub2 = array(1, 3, 4, 9, 5, 6, 10, 8, 11, 12);
    $sub3 = array(1, 2, 3, 4, 12, 6, 10, 7, 8);

    switch($type){
        case 1: $questionpath = $sub1; break;
        case 2: $questionpath = $sub2; break;
        default: $questionpath = $sub3; 
    }

    $q_strings = array_keys($questions);
    $letters = range('A', 'Z');

    //output
    for($i = 0; $i < count($questionpath); $i++){

        $qnum = $questionpath[$i] - 1; //the index of the question
        $question = array_keys($questions)[$qnum];
        $answers = array_keys($questions[$question]);


        echo '<table><tr><td>'.($i+1).'</td>
              <td>'.$question.'</td>
              </tr></table>';

        for($j = 0; $j < count($answers); $j++){
             if($answers[$j] != "expl")
             echo '<input type="radio" name="q'.($i+1).'" id="q'.($i+1).'a'.($j+1).'" onchange="showAnswer($(\'#correct'.($i+1).'\'),'.$questions[$question][$answers[$j]].');"><label for="q'.($i+1).'a'.($j+1).'">'.range('A', 'Z')[$j].'. '.$answers[$j].'</label></br />';
        }

        echo '<span id="correct'.($i+1).'" class="correct"><i>'.$questions[$question]['expl'].'</i></span>
        <span class="correct"><i>'.$questions[$question]['expl'].'</i></span>
        </div>
        <br />';
    }

}

在“.inc”文件中使用此功能已在我的本地服务器上运行，但在实时服务器上使用会导致403错误。

但是，更改代码以便不会出现多维访问：

$q_arr = $questions[$question];

并将访问次数更改为：

$questions[$question][$answers[$j]] 

类似于：

 $q_arr[$ans]

修复了这403个错误。那么，服务器是否可以通过访问多维数组的代码来提供403错误？