foreach循环检查值上移动

Question

我有一个foreach循环，看起来像在此之前发生了变化，

<?php $current_question = ""; 
    foreach ($question_and_answers as $qa) : ?> 
     <?php $current_question == $qa['current_question']; ?> 
     <?php if($current_question == $current_question) : ?> 
      <input type="text" name="question[]" value="<?php echo $qa['question']; ?>"/> 
     <?php endif; ?> 
<?php endforeach; ?> 

我想创建一个输入字段中每个循环打新的问题的时候（问题得到返回数次，因为一个问题可以有很多答案）。我所做的似乎并不奏效。

我想看到我的帮助工作的阵列，

Array 
(
    [0] => Array 
     (
      [question_id] => 2 
      [question] => What is my name? 
      [tests_test_id] => 2 
      [answer_id] => 5 
      [answer] => Simon 
      [questions_question_id] => 2 
      [correct] => true 
     ) 

    [1] => Array 
     (
      [question_id] => 2 
      [question] => What is my name? 
      [tests_test_id] => 2 
      [answer_id] => 6 
      [answer] => Dave 
      [questions_question_id] => 2 
      [correct] => false 
     ) 

    [2] => Array 
     (
      [question_id] => 2 
      [question] => What is my name? 
      [tests_test_id] => 2 
      [answer_id] => 7 
      [answer] => Fred 
      [questions_question_id] => 2 
      [correct] => false 
     ) 

    [3] => Array 
     (
      [question_id] => 2 
      [question] => What is my name? 
      [tests_test_id] => 2 
      [answer_id] => 8 
      [answer] => John 
      [questions_question_id] => 2 
      [correct] => false 
     ) 

    [4] => Array 
     (
      [question_id] => 3 
      [question] => What is my surname? 
      [tests_test_id] => 2 
      [answer_id] => 9 
      [answer] => Crawford 
      [questions_question_id] => 3 
      [correct] => true 
     ) 

    [5] => Array 
     (
      [question_id] => 3 
      [question] => What is my surname? 
      [tests_test_id] => 2 
      [answer_id] => 10 
      [answer] => Caine 
      [questions_question_id] => 3 
      [correct] => false 
     ) 

    [6] => Array 
     (
      [question_id] => 3 
      [question] => What is my surname? 
      [tests_test_id] => 2 
      [answer_id] => 11 
      [answer] => Rooney 
      [questions_question_id] => 3 
      [correct] => false 
     ) 

    [7] => Array 
     (
      [question_id] => 3 
      [question] => What is my surname? 
      [tests_test_id] => 2 
      [answer_id] => 12 
      [answer] => Ainley 
      [questions_question_id] => 3 
      [correct] => false 
     ) 

    [8] => Array 
     (
      [question_id] => 4 
      [question] => What is my favourite colour? 
      [tests_test_id] => 2 
      [answer_id] => 13 
      [answer] => Blue 
      [questions_question_id] => 4 
      [correct] => true 
     ) 

    [9] => Array 
     (
      [question_id] => 4 
      [question] => What is my favourite colour? 
      [tests_test_id] => 2 
      [answer_id] => 14 
      [answer] => Yellow 
      [questions_question_id] => 4 
      [correct] => false 
     ) 

    [10] => Array 
     (
      [question_id] => 4 
      [question] => What is my favourite colour? 
      [tests_test_id] => 2 
      [answer_id] => 15 
      [answer] => Green 
      [questions_question_id] => 4 
      [correct] => false 
     ) 

    [11] => Array 
     (
      [question_id] => 4 
      [question] => What is my favourite colour? 
      [tests_test_id] => 2 
      [answer_id] => 16 
      [answer] => Red 
      [questions_question_id] => 4 
      [correct] => false 
     ) 

    [12] => Array 
     (
      [question_id] => 5 
      [question] => Who do I support? 
      [tests_test_id] => 2 
      [answer_id] => 17 
      [answer] => Huddersfield Town 
      [questions_question_id] => 5 
      [correct] => true 
     ) 

    [13] => Array 
     (
      [question_id] => 5 
      [question] => Who do I support? 
      [tests_test_id] => 2 
      [answer_id] => 18 
      [answer] => Leeds United 
      [questions_question_id] => 5 
      [correct] => false 
     ) 

    [14] => Array 
     (
      [question_id] => 5 
      [question] => Who do I support? 
      [tests_test_id] => 2 
      [answer_id] => 19 
      [answer] => Manchester United 
      [questions_question_id] => 5 
      [correct] => false 
     ) 

    [15] => Array 
     (
      [question_id] => 5 
      [question] => Who do I support? 
      [tests_test_id] => 2 
      [answer_id] => 20 
      [answer] => Wolverhampton Wanderes 
      [questions_question_id] => 5 
      [correct] => false 
     ) 

) 

我试图通过数组做，循环，每次我遇到一个新的问题，我想outout与值的文本输入的问题。

Answer 1

试试这个。

<?php $current_question = ""; 
    foreach ($question_and_answers as $qa) : ?> 
     <?php if($current_question == $qa['current_question']) : ?> 
      <input type="text" name="question[]" value="<?php echo $qa['question']; ?>"/> 
      <?php $current_question = $qa['current_question']; ?> 
     <?php endif; ?> 
<?php endforeach; ?> 

Answer 2

你的代码是很奇怪的，你可能有你的理由写这样的说法，但让我重写，所以我可以看得更清楚：

$current_question = ''; 

foreach($questions_and_answers as $qa){ 

    $current_question == $qa['current_question']; 

    if($current_question == $current_question){ ?> 
     <input type="text" name="question[]" value="<?php echo $qa['question']; ?>"/> 
    <? } 

} 

我看到一对夫妇的故障：

1. $current_question == $qa['current_question'];什么都不做，这是一个有条件的，会返回true或false，但它不会返回任何东西。我认为你已经混合了一个定义：$current_question = $qa['current_question'];
2. $current_question == $current_question;将始终返回1，因为它是相同的变量。我认为你正试图把它比作$qa['current_question']

这应该是你在找什么：

$current_question = ''; 

foreach($questions_and_answers as $qa) 
    if($current_question == $qa['current_question']){ ?> 
     <input type="text" name="question[]" value="<?php echo $qa['question']; ?>"/> 
    <? } 

或者在你的代码：

<?php $current_question = ""; 
    foreach ($question_and_answers as $qa) : ?> 
     <?php if($current_question == $qa['current_question']) : ?> 
      <input type="text" name="question[]" value="<?php echo $qa['question']; ?>"/> 
     <?php endif; ?> 
<?php endforeach; ?> 

然而，这仍然是奇怪，因为您将$current_question定义为空字符串，所以条件将仅在$qa['current_question']为空时运行。然而，你的问题太模糊，看不清你的意思。