Question

<?php
$singleSQL = mysql_query("SELECT * FROM questions WHERE subject_id='$subject' AND question_id='$question'");

$row = mysql_fetch_array($singleSQL);
$thisQuestion = $row['question'];
$type = $row['type'];
$question_id = $row['question_id'];

$q = '<h2>'.$thisQuestion.'</h2>';

$sql2 = mysql_query("SELECT * FROM answers WHERE question_id='$question' ORDER BY rand()");

while($row2 = mysql_fetch_array($sql2)){
    $answer = $row2['answer'];
    $correct = $row2['correct'];

    $answers .= '<label style="cursor:pointer;"><input type="checkbox" name="rads" value="'.$correct.'">'.$answer.'</label> 
    <input type="hidden" id="qid" value="'.$id.'" name="qid"><br /><br />
    ';
}

$output = ''.$q.','.$answers.',<span id="btnSpan"><button onclick="post_answer()">Atsakyti</button></span>';

echo $output;
?>

不对所选主题发布问题。在数据库中找不到问题，因为问题具有不同的主题ID，并且它不是任何顺序。

var p = new XMLHttpRequest();
var id = document.getElementById('qid').value;
var url = "userAnswers.php";
var vars = "qid=" + id + "&radio=" + x();
p.open("POST", url, true);
p.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
p.onreadystatechange = function() {
    if (p.readyState == 4 && p.status == 200) {
        document.getElementById("status").innerHTML = '';
        var hr = new XMLHttpRequest();
        hr.onreadystatechange = function() {
            if (hr.readyState == 4 && hr.status == 200) {
                var response = hr.responseText.split("|");
                if (response[0] == "finished") {
                    document.getElementById('status').innerHTML = response[1];
                }
                var nums = hr.responseText.split(",");
                document.getElementById('question').innerHTML = nums[0];
                document.getElementById('answers').innerHTML = nums[1];
                document.getElementById('answers').innerHTML += nums[2];
            }
        }
        hr.open("post", "questions.php", true);
        hr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
        hr.send("subject=<?php echo $subject; ?>&question=<?php echo $next; ?>");
    }
}
p.send(vars);

}

这是按钮触发的功能

Answer 1

检查您的查询。 $question_id失踪。

$sql2 = mysql_query("SELECT * FROM answers WHERE question_id='$question_id' ORDER BY rand()");

不发表关于该主题的下一个问题

1 个答案: