如何制作一个可以选择问题并将答案从/保存到数据库的表格

Question

我正在制作一个从数据库中获取问题和答案的表格，我有几个问题，但我想在每一页上回答一个问题，然后转到下一个问题。我怎样才能做到这一点？我需要一些提示。

我的问题和答案代码如下所示：

echo "<form method='post'>";
	$sql= "SELECT pid, qid, question_link FROM question  ORDER BY qid ASC LIMIT 1";

$result = $mysqli->query($sql);

if ($result->num_rows > 0) {
    while($row = $result->fetch_array()) {
	$pid1= $row['pid'];
	$qid1= $row['qid'];
	
	echo $row['question_link']."<br>";
	}
 
}

	$sql1= "SELECT pid, qid, aid, answer, points FROM answer_det WHERE pid=$pid1 AND qid=$qid1";

$result1 = $mysqli->query($sql1);

if ($result1->num_rows > 0) {
    while($row = $result1->fetch_array()) {
		$answer= $row['answer'];
		$aid= $row['aid'];
	echo "<input type='radio' name='answers' value='".$answer."'/>".$answer."<br>";
	}
 
}

echo "<input type='submit' value='Submit'></form>";

我应该创建另一个 PHP 页面，将数据保存到数据库中并显示下一个问题吗？或者有什么功能可以做到这一点？

Answer 1

视情况而定。如果您希望用户在途中停下来，下次可能会回来完成它，那么 DB 是一个不错的选择。否则你可以使用 session 来存储他们的进度。

<?php 
session_start();
if(isset($_POST['name'])){
    //store answers in session
    $new = (!empty($_SESSION['session_name']))? $_SESSION['session_name'].'|'.$_POST['name'] : $_POST['name'];
    //split session into an array
    $_SESSION['session_name'] = $new;
}
else if(isset($_POST['clear'])){
    if(!empty($_SESSION['session_name'])){
        unset($_SESSION['session_name']);
        echo "cleared";
    }
    else
        echo "Nothing to Clear";
}
if(!empty($_SESSION['session_name'])){
    var_dump($_SESSION['session_name']);
}
//finish the procees here befor storing into database;
//use foreach to itterate btw arrays and match anwers
//$_SESSION['session_name'] = explode('|', $_SESSION['session_name']);
//answer table $answers = array('a','b','c','d','e');
/* foreach($_SESSION['session_name'] as $key => $ans){
     if($ans == $answer[$key]){
        //right procesesor
     }
     else{
        //wrong procesesor
     }
} */
//handle the right and wrong process get to total score the store in db


?>
<form method="post" action="index.php">
   <input name="name" type="text" placeholder="">
   <input type="submit" value="submit">
</form>
<form method="post" action="index.php">
  <input type="submit" name="clear" value="clear">
</form>

简单的基本演示会话如何在不每次查询数据库的情况下完成工作。