如何使用复选框形式选择 PHP 多维数组项

Question

我对 PHP 很陌生，而且只是一般的代码，所以如果我的代码看起来一团糟，我深表歉意。

我创建了一个多维数组，当某些复选框被选中并通过表单提交时，我只希望显示选定的数组项。例如，John Smith 的信息和图像只有当他被选中时。

这是我的多维数组：

<?php
$characters = array (

  'john' => 
  array (
    'first_name' => 'John',
    'last_name' => 'Smith',
    'age' => '40',
    'image_url' => 'images/john.png',
  ),
  'jane' => 
  array (
    'first_name' => 'Jane',
    'last_name' => 'Doe',
    'age' => '30',
    'image_url' => 'images/jane.png',
  ),
  'sara' => 
  array (
    'first_name' => 'Sara',
    'last_name' => 'Johnson',
    'age' => '10',
    'image_url' => 'images/sara.png',
  )
)
?>

这是我的 html 表单：

<h3 class="form__heading"> Select characters to show </h3>
<form method="post">
<ul class="form__items">

<!--John-->
<li class="form__item">
<label for="john">John Smith </label>
<input id="john" type="checkbox" name="john">
</li>
                                        
<!--Jane-->
<li class="form__item">
<label for="jane">Jane Doe </label>
 <input id="jane" type="checkbox" name="jane">
 </li>
                                        
<!--Sara-->
<li class="form__item">
<label for="sara">Sara Johnson </label>
<input id="sara" type="checkbox" name="sara">                           
</li>
</ul>
                                    
<!--Button-->
<input class="form__button" type="submit" value="Show Characters">
</form>

我尝试过 foreach 和 for 循环，但我认为我做错了。非常感谢任何帮助！

Answer 1

我解决了你的问题，请查看我在下面给你的脚本

html代码会是这样的

<form action="index.php" method="post">
<ul class="form_items">
<!--John-->
<li class="form_item">
<label for="john">John Smith </label>
<input id="john" type="checkbox" name="characters[]" value="john">
</li>                               
<!--Jane-->
<li class="form__item">
<label for="jane">Jane Doe </label>
 <input id="jane" type="checkbox" name="characters[]" value="jane">
 </li>                            
<!--Sara-->
<li class="form_item">
<label for="sara">Sara Johnson </label>
<input id="sara" type="checkbox" name="characters[]" value="sara">                           
</li>
</ul>

php脚本会是这样的

    <?php
$characters = array (
    'john' => 
    array (
      'first_name' => 'John',
      'last_name' => 'Smith',
      'age' => '40',
      'image_url' => 'images/john.png',
    ),
    'jane' => 
    array (
      'first_name' => 'Jane',
      'last_name' => 'Doe',
      'age' => '30',
      'image_url' => 'images/jane.png',
    ),
    'sara' => 
    array (
      'first_name' => 'Sara',
      'last_name' => 'Johnson',
      'age' => '10',
      'image_url' => 'images/sara.png',
    )
    );

if(isset($_POST['submit'])){
    $selectedCharacter = $_POST['characters'];
    foreach ($selectedCharacter as $Character) {
        echo "first_name:- ".$characters[$Character]['first_name'].'<br>';
        echo "last_name:- ".$characters[$Character]['last_name'].'<br>';
        echo "age:- ".$characters[$Character]['age'].'<br>';
        echo "image_url:- ".$characters[$Character]['image_url'].'<br><br>';
    }
}
?>

参考本频道https://www.youtube.com/channel/UCnqWFcMpFA_dsxEzt7lKxJA