PHP - 表单提交中选定复选框的循环数

Question

我有一个问题，我需要循环表单提交中复选框的数量。 Foreach复选框是循环的，我需要将数据插入到数据库中。 我该如何去循环遍历通过表单提交传递的复选框的数量？

我的代码如下：

表：

<form action="createChallenge.php" method="post" name="chalCreate"> 
    Challenge Name:<input type="text" name="chalName" /> 
    <br /> 
    Challenge Target:<input type="text" name="chalTarget"/> 
    <br /> 
    End Date:<input type="text" name="chalDate"> 
    <br /> 
    <!-- Needs a jquery datepicker --> 
    Select Friends: <br /> 
    <?php 
     $selFriend = $conn->prepare("SELECT * FROM Friends WHERE UserID = '$userID' AND Friend = 'y' ORDER BY FriendName ASC"); 
     $selFriend->execute(); 
     foreach($selFriend as $row){ 
    ?> 
    <input type="checkbox" name="test" value="<?php echo $row['FriendID'] ?>"><?php echo $row['FriendName'] ?><br> 
    <?php 
    } 
    ?> 

<br /> 
<button type="submit">Create Challenge</button> 
</form> 

PHP处理表单：

<?php 
     if(isset($_POST['test'])) 
     { 
      $i = 0; 
      foreach($_POST['test'] as $checked) 
      { 
       echo $friend = $checked; 
       $i++; 
      } 


      echo $name = $_POST['chalName']; 
      echo $target = $_POST['chalTarget']; 
      echo $date = $_POST['chalDate']; 
      echo $friend = $_POST['test']; 
      echo $setby = $_COOKIE['userID']; 

      $create = $conn->prepare("INSERT INTO Challenge (chalSetBy, chalName, chalTarget, chalDate) VALUES ('$setby', '$name', '$target', '$date') "); 
      $create->execute(); 

      if($create) 
      { 
       echo "Challenge made successfully"; 
      } 
      else 
      { 
       echo "There was a problem"; 
      } 
     } 
     ?> 

我以为做以下将回声出的数据，但它没有，它只选择了最后一个复选框：

$i = 0; 
foreach($_POST['test'] as $checked) 
{ 
    echo $friend = $checked; 
    $i++; 
} 

Answer 1

让您的复选框的数组中的HTML页面类似如下，

<form name="frm" method="post"> 
<input type="checkbox" value="1" name="test[]"> 
<input type="checkbox" value="2" name="test[]"> 
<input type="checkbox" value="3" name="test[]"> 
<input type="checkbox" value="4" name="test[]"> 
<input type="checkbox" value="5" name="test[]"> 
<input type="checkbox" value="6" name="test[]"> 
<input type="submit"> 
</form> 

<?php 
foreach($_POST['test'] as $key=>$value) 
{ 
echo $value."<br>"; 

}