Question

我有以下代码的多个复选框（数组）：

<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Business" /> Business</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Public Affairs / Law" />Public Affairs / Law</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Medicine" />Medicine</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Literature / Writing / Journalism" />Literature / Writing / Journalism</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Technology" />Technology</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Engineering" />Engineering</label>
</div>

提交表单时，我尝试通过以下方式检索所选值：

         print_r($_POST['major']);

打印：

         Array ( [0] => [1] => )

它检测到两个复选框被勾选，但它以某种方式无法检索出值。我做错了什么？

======================= PHP片段====================== ==

require 'dbconnect.php';


if($_SERVER["REQUEST_METHOD"] == "POST"){
                 if(isset($_POST['major'])){

                $top_majors = implode(',', $_POST['top_three_major']);

                echo $top_majors;
            }else{

                $top_majors = '-';

            }
}

=======================解决======================= =====

好的，我解决了我的问题。当浏览器准备就绪时我尝试清除表单字段是一个愚蠢的错误，因此，复选框值在能够POST之前被重置。

谢谢你们帮助我！特别是学习者学生，我很感激！我希望我能投票给你所有人，但太糟糕了，我的名声太低了。

再次感谢。

Answer 1

试试这个

<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Medicine" />Medicine</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Literature / Writing / Journalism" />Literature / Writing / Journalism</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Technology" />Technology</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Engineering" />Engineering</label>
</div>

Answer 2

我试过这段代码。有一些报价遗失。添加完毕后效果非常好。

<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Business" /> Business</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Public Affairs / Law" />Public Affairs / Law</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Medicine" />Medicine</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Literature / Writing / Journalism" />Literature / Writing / Journalism</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name=major[] value="Technology" />Technology</label>
</div>
<div class="checkbox">
    <label><input type="checkbox" name="major[]" value="Engineering" />Engineering</label>
</div>

- PHP ---

print_r($_POST['major']);

- out put -----

Array ( [0] => Medicine [1] => Literature / Writing / Journalism [2] => Technology )

Answer 3

试试这个它现在正在运作......

<form action="<?=$_SERVER["PHP_SELF"];?>" method="post">
    <div class="checkbox">
        <label><input type="checkbox" name="major[]" value="Medicine"/>Medicine</label>
    </div>
    <div class="checkbox">
        <label><input type="checkbox" name="major[]" value="Literature / Writing / Journalism"/>Literature / Writing / Journalism</label>
    </div>
    <div class="checkbox">
        <label><input type="checkbox" name="major[]" value="Technology"/>Technology</label>
    </div>
    <div class="checkbox">
        <label><input type="checkbox" name="major[]" value="Engineering"/>Engineering</label>
    </div>
    <input type="submit" name="submit" value="Submit">
</form>

在php中将此代码写在同一页面上，因为我在$_SERVER["PHP_SELF"]中写action表示在同一页面提交表单只是根据需要更改操作。

if(isset($_POST['submit'])) {
    echo '<pre>';print_r($_POST['major']);echo '</pre>';
    echo '<pre>';print_r($_POST);echo '</pre>';
}

Answer 4

它正在运作：

   <form action="" method="post" >
   <div class="checkbox">
                                <label><input type="checkbox" name="major[]" value="Medicine" />Medicine</label>
                            </div>
                            <div class="checkbox">
                                <label><input type="checkbox" name="major[]" value="Literature / Writing / Journalism" />Literature / Writing / Journalism</label>
                            </div>
                            <div class="checkbox">
                                <label><input type="checkbox" name="major[]" value="Technology" />Technology</label>
                            </div>
                            <div class="checkbox">
                                <label><input type="checkbox" name="major[]" value="Engineering" />Engineering</label>
                            </div>
                            <input type="submit">
    </form>
<?php
if(isset($_POST['major']))
print_r($_POST['major']);
?>

3th name=major[]"只需更改为name="major[]"您的Html语法错误！

无法从复选框数组中检索值

4 个答案: