如何使数组中的元素在单击提交按钮后一次显示一个 - How to make elements of an array appear one at the time after clicking submit button?

How to make elements of an array appear one at the time after clicking submit button?

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kysimustik_id=poll_id的数据库中提取问题，并对其进行echo处理。但我如何才能让它发挥作用，这样问题就会一次出现一个，只有在我点击"提交"按钮后才会出现新的问题？

你可以像下面的一样

<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。您可以很容易地用php数组

替换它

<?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，但我确信它是有效的。请注意，这是一种非常不安全的方法，因为您可以使用firebug等扩展来编辑隐藏字段的值。