Question

我有以下代码：

<?php
include_once 'init/init.funcs.php';
$pollid=(int) $_GET['pollid'];
$questions = array();
$result = mysql_query('SELECT kysimus FROM kysimused where kysimustik_id="' . $pollid . '"');
while($row = mysql_fetch_assoc($result)) {
    $questions[] = $row['kysimus'];
}

$count=count($questions);
$x=0;
while ($x<$count){
    echo $questions[$x];
    $x+=1;
}
?>
<form method="get">
<input type="submit" value="Submit">
</form>

它从数据库中获取了具有kysimustik_id = poll_id的问题，然后回复它们。但是我怎么能让它工作，所以当时问题会出现一个问题，只有在我点击＆＃34;提交＆＃34;按钮？

Answer 1

您可以执行以下操作

<div class="row text-center">
        <button type="submit" class="btn btn-lg btn-info">Click Here!</button>
    </div>

$(function(){
        var values = [
            "hi",
            "hello",
            "nice",
            "wonderful"
        ];
        var counter = 0;
        $(".btn-lg").on("click", function(){
            if(values.length) {
                counter = (counter + 1) % values.length;
                $('.row.text-center').append(values[counter] + ' ');
            }
        });
});

在上面的例子中，我使用了javascript数组。您可以通过php数组轻松替换它

Answer 2

<?php
include_once 'init/init.funcs.php';
$pollid=(int) $_GET['pollid'];
 if(isset($_POST['QuestionID'])
{
    $questionID = $_POST["QuestionID"];
    HandleAnswer($pollid,$questionID,$_POST['Answer']);
}
else
{
    $questionID = 0;
}
$questions = array();
$result = mysql_query('SELECT kysimus FROM kysimused where kysimustik_id="' . $pollid . '"');
while($row = mysql_fetch_assoc($result)) {
    $questions[] = $row['kysimus'];
}

function HandleAnswer(string PollId, string QuestionID, string Answer){
  // Implement piece of code that sets the answer in the database,
  // I leave this up to you since i have no Idea how your database is structured


}
 $questionID++;
 $count=count($questions);
 if($questionID < $count){

?>
<form method="post" action="mypage?=<?php echo $pollid; ?>">
<?php echo $questions[$questionID]; ?>
<input type="hidden" name="questionID" value="<?php echo $questionID;?>"/>
<input type="text" name="Answer"/>
<input type="submit" value="Submit">
</form> 

<?php }else{ ?>
THese were all our questions, thank you for answering!
<?php } ?>

我自己没有测试代码，但我确信它有效。请注意，这是一种非常不安全的方法，因为您可以使用扩展名（如firebug）编辑隐藏字段的值。

单击提交按钮后如何使数组元素出现？

2 个答案: