Php 如何获得多项选择题调查的答案？

我正在做一个调查网站，现在我正在努力回答多项选择题。一切正常，但现在我想访问用户选择的答案，但我不知道如何准确地做到这一点

我的初始代码看起来像ThatAnswing.php：

<?php
include_once 'init/init.funcs.php';
$_SESSION['pollid']=(int) $_GET['pollid'];
$questions = array();
if (!isset($_SESSION['answering'])) {
    $result = mysql_query('SELECT * from katse_kysimused where kysimustik_id="' . $_SESSION['pollid'] . '"');
    while($row = mysql_fetch_assoc($result)) {
        $questions[] = $row['kysimus'];
        }
    $_SESSION['answering']['questions'] = $questions;
    $_SESSION['answering']['index'] = 0;
}
    $x = $_SESSION['answering']['index'];
    $result3 = mysql_query('SELECT tyyp_id FROM katse_kysimused where kysimus= "' . $_SESSION['answering']['questions'][$x] . '"');
    $type = mysql_result($result3, 0);
    if ($type=='3'){
        echo "<meta http-equiv='refresh' content='0;url=http://localhost/Praks/valikvastustega_kysimusele_vastamine.php'>";
        }

    if ($type=='1'){
            echo "<meta http-equiv='refresh' content='0;url=http://localhost/Praks/tekstkysimusele_vastamine2.php'>";
            $answer = $_POST['answer'];
        }

if(isset($_POST['submit'])){
    $result2 = mysql_query('SELECT kysimus_id FROM katse_kysimused where kysimus= "' . $_SESSION['answering']['questions'][$x -1] . '"');
    $q_id = mysql_result($result2, 0);
    mysql_query('INSERT INTO katse_vastused2 (id, vastus,kysimus_id, vastustik_id) VALUES (NULL,"' . $answer . '","' . $q_id . '","1")');
    }
$_SESSION['answering']['index']++;
?>

然后为了控制它是否有效，我在第二个文件中添加了以下代码：

print $_SESSION['answering']['selected_radio'];

但它不起作用。我应该在哪里写什么来获取多项选择题的答案

编辑：

现在，我的两段代码如下所示：

<?php
include_once 'init/init.funcs.php';
$_SESSION['pollid']=(int) $_GET['pollid'];
$questions = array();
if (!isset($_SESSION['answering'])) {
    $result = mysql_query('SELECT * from katse_kysimused where kysimustik_id="' . $_SESSION['pollid'] . '"');
    while($row = mysql_fetch_assoc($result)) {
        $questions[] = $row['kysimus'];
        }
    $_SESSION['answering']['questions'] = $questions;
    $_SESSION['answering']['index'] = 0;
}
    $x = $_SESSION['answering']['index'];
    $result3 = mysql_query('SELECT tyyp_id FROM katse_kysimused where kysimus= "' . $_SESSION['answering']['questions'][$x] . '"');
    $type = mysql_result($result3, 0);
    if ($type=='3'){
        echo "<meta http-equiv='refresh' content='0;url=http://localhost/Praks/valikvastustega_kysimusele_vastamine.php'>";
        }

    if ($type=='1'){
            echo "<meta http-equiv='refresh' content='0;url=http://localhost/Praks/tekstkysimusele_vastamine2.php'>";
            $answer = $_POST['answer'];
        }

if(isset($_POST['submit'])){
    $result2 = mysql_query('SELECT kysimus_id FROM katse_kysimused where kysimus= "' . $_SESSION['answering']['questions'][$x -1] . '"');
    $q_id = mysql_result($result2, 0);
    mysql_query('INSERT INTO katse_vastused2 (id, vastus,kysimus_id, vastustik_id) VALUES (NULL,"' . $answer . '","' . $q_id . '","1")');
    $selected_radio = $_POST['option'];
    $_SESSION['answering']['option']=$selected_radio;
}
$_SESSION['answering']['index']++;
?>

但当我改变以下部分时：

<input type="radio" name="option" value=<?php $option ?>><?php echo $option?><br>

比如说：

如果我回答前面的问题，它会在问题的开头打印出dog

---

问题似乎是我的单选按钮没有收到选项的值，如何解决这个问题？

简单添加更多的单选输入

<input type="radio" name="option" value="value1"><br>
<input type="radio" name="option" value="value2"><br>
<input type="radio" name="option" value="value3"><!-- the value defines the choice. -->

如果您单击一个按钮，它将收到选中的标记，如下所示

<input type="radio" name="option" value="value1" checked><br>//this one is clicked now
<input type="radio" name="option" value="value2"><br>
<input type="radio" name="option" value="value3">

然后在php中执行以下操作。$\u POST保存具有选中标记的无线电输入的值

if(isset($_POST["option"])){ //checks if any of the buttons is checked.
    $var = $_POST["option"]; //this is now either value1, value2 
                             //or value3 depending on which was selected.
}else{                       //If there was no button selected.
    echo "must select an option";
}

//$_POST['option'] <-- 'option' here is the name of the radio button.
//$var = $_POST['option'] <-- $var will now hold the value of the checked radio button. 

编辑示例

$questions = array() //instert questions can be done automaticaly probably.
//for if the question names are not unique.
$i=0;
//for all the questions
foreach($questions as $x){
    //Get all answers for the question put them in another array.
    $answers = array();
    $answers = $x->getanswers();
    //if quesionnames are not unique an increment to make question names unique.
    $x = $x.$i;
    $i++;
    //for all the answers of the found question
    foreach($answers as $y){
        //echo a radion buttion with the name of the question and the value of the answer.
        echo "<input type='radio' name='$x' value='$y'>";
    }
}

---

对于新的单选$\u POST input更改名称标记，代码将创建尽可能多的单选按钮，因为数据库中当前问题可能有答案。我不想手动添加单选按钮。然后对可能的答案使用foreach循环，并为每个答案回显一个单选按钮，值=$answer。还可以使用一些增量来更改名称。每个问题。你能写一些例子吗？是的，等等，我得深入研究一下

<input type="radio" name="option" value="value1"><br>
<input type="radio" name="option" value="value2"><br>
<input type="radio" name="option" value="value3"><!-- the value defines the choice. -->

<input type="radio" name="option" value="value1" checked><br>//this one is clicked now
<input type="radio" name="option" value="value2"><br>
<input type="radio" name="option" value="value3">

if(isset($_POST["option"])){ //checks if any of the buttons is checked.
    $var = $_POST["option"]; //this is now either value1, value2 
                             //or value3 depending on which was selected.
}else{                       //If there was no button selected.
    echo "must select an option";
}

//$_POST['option'] <-- 'option' here is the name of the radio button.
//$var = $_POST['option'] <-- $var will now hold the value of the checked radio button. 

$questions = array() //instert questions can be done automaticaly probably.
//for if the question names are not unique.
$i=0;
//for all the questions
foreach($questions as $x){
    //Get all answers for the question put them in another array.
    $answers = array();
    $answers = $x->getanswers();
    //if quesionnames are not unique an increment to make question names unique.
    $x = $x.$i;
    $i++;
    //for all the answers of the found question
    foreach($answers as $y){
        //echo a radion buttion with the name of the question and the value of the answer.
        echo "<input type='radio' name='$x' value='$y'>";
    }
}