如何使用html表单提交多个数组复选框

Question

我正在尝试使用复选框表单提交多个数组,但我目前只能提交一个数组,这是我到目前为止所拥有的

在这个例子中,我提交了一个带数组的数字delete[]数组,这个数组得到了正确的处理,我也想提交这个数组,但condition[]这个数据没有得到正确处理,解决这个问题的最佳方法是什么？

PHP代码

$catalog = $database->getInventory();

if($catalog){   
   $numRows = sizeof($catalog);//count
   echo "<b>Book Count:</b> ".$numRows."<br>";

   echo "<form method='post' action='inventory.php'>";
   echo "<table id='example' class='tablesorter' border='0' cellpadding='0' cellspacing='1'>";
   echo "
      <thead>
         <tr>
           <th>ISBN</th>        
           <th>Title&nbsp;&nbsp;&nbsp;</th>
           <th>Rank&nbsp;&nbsp;</th>
           <th>Condition&nbsp;&nbsp;</th>   
           <th><input type='checkbox' name='delete' value='all' /></th>
         </tr>
      </thead>\n";


   foreach($catalog as $elem){
      echo "
         <tr>
            <td>".$elem["isbn"]."</td>
            <td>".$elem["title"]."</td>
            <td>".$elem["rank"]."</td>
            <td>".$elem["condition"]."</td>
            <td> 
               <input type='checkbox' name='add[]' 
                  value='".$elem['isbn']."_".$elem['condition']."_"."' />
            </td>
         </tr>";    
   }

   echo "</table>";
   echo "</form>";
}

示例html标记

<form method='post' action='inventory.php'>
   <table>
      <tr>
         <td>
            <input type='hidden' name='addInventoryBook' value='1'>
            <input type='submit' value='Add' />
         </td>
      </tr>

      <tr>
         <td>
            <input type='checkbox' name='add[]' value='100001_used' />
         </td>
      </tr>

      <tr>
         <td>
            <input type='checkbox' name='add[]' value='100001_new' />
         </td>
      </tr>

      <tr>
         <td>
            <input type='checkbox' name='add[]' value='100003_new' />
         </td>
      </tr>

   </table>
</form>

php功能

function Inventory(){   
   if(isset($_POST['addInventoryBook'])){
      if(isset($_POST['add']) && is_array($_POST['add'])){
     $arr = array();
         foreach($_POST['add'] as $checkbox){
            $temp = explode("_", $checkbox);

            $arr[] = array(
               "isbn"       => $temp[0],
               "condition"      => $temp[1],
               "sub_condition"  => $temp[2]
            );
         }              
     $this->addInventoryBook($arr); 
      }

      else{
         echo "No values have been set";
      }
 }


function addInventoryBook($arr){
   foreach($arr as $elem){
      //if used get sub-category
      if($elem['condition']=='used'){
         echo $elem['isbn']."-".ucfirst($elem['condition'])
            .ucfirst($elem['sub_condition'])."<br>";
      }

      else if($elem['condition']=='new'){
         echo $elem['isbn']."-".ucfirst($elem['condition'])."<br>";
      }

   }
}

我想要的只是基本上能够将两个数组传递给我的PHP脚本

电流输出

100001
100002
100003

期望的输出

100001   good
100002   new
100003   new

Answer 1

我怀疑,你遇到的问题是,只有被检查的复选框才会被传递回服务器,而所有隐藏的字段将始终传递,因此数组的长度将不同,键也不会对应.

解决方案实际上相对简单 - 您只需指定condition数组的键,以便可以再次匹配值.像这样的东西:

HTML:

  <tr>
     <td>
        <input type='hidden' name='condition[100001]' value='good' />
        <input type='checkbox' name='delete[]' value='100001' />
     </td>
  </tr>

  <tr>
     <td>
        <input type='hidden' name='condition[100002]' value='new' />
        <input type='checkbox' name='delete[]' value='100002' />
     </td>
  </tr>

PHP:

foreach ($_POST['delete'] as $delete) {
  $condition = $_POST['condition'][$delete];
  // Do stuff
}

这会将$_POST['condition']数组中的值与数组联系起来,$_POST['delete']以便所有内容再次匹配.

编辑

上面创建密钥的方式并不好,回想起来,这是错误的方法.

为了演示正确的方法,让我们假设我们有以下数组,简单明了:

$books = array(
  10001 => 'good',
  10002 => 'new',
  10003 => 'new',
  10004 => 'good'
);

我们需要做的是占用与每本书相关的两个输入,这意味着我们需要一组可以匹配的键/值对.这听起来像是一个阵列给我.但与上面的示例不同,密钥应该与数据无关 - 它们不需要任何意义,因为我们想要的只是数据.

我们需要做的是明确指定每个单独的键(没有堆栈样式的数组推送),并使密钥与它们相关的数据不可知.

我们做得到:

$i = 0;
foreach ($books as $isbn => $condition) {
  echo "
    <tr>
      <td>
        <input type='hidden' name='condition[$i]' value='$condition' />
        <input type='checkbox' name='delete[$i]' value='$isbn' />
      </td>
    </tr>
  ";
  $i++;
}

...然后,在提交表单时,我们可以这样做:

// We still base our code on $_POST['delete'] - because this is the array that
// depends on the user input. This time, though, we'll look at the keys as well
foreach ($_POST['delete'] as $key => $isbn) {
  $condition = $_POST['condition'][$key];
  // Do stuff
}