我正在尝试开发一个简单的评论系统。
对于每个新帖子，都会创建一个新的列表项。
列表项的ID为AUTO_INCREMENT。弹出窗口应插入以下值：帖子$ id的id，帖子$ autor的作者和评论用户名的作者
现在的问题是，如果我将元素listone的ID设置为$ row ['id']行的ID，则ID是正确的。但是，当我将listitem的id设置为输入元素id的值时，该id或我在其中添加的其他内容始终具有与上次添加的帖子/列表项相同的id或时间。
第二个输入元素，应该插入帖子的主持人，可以正常工作。
如何使ID唯一？
<div data-role="content">
<?php
include("list.php");
?>
<div data-demo-html="true">
<ul data-role="listview" data-inset="true" class="ui-listview ui-listview-inset ui-corner-all ui-shadow">
<?php foreach ($result as $key => $row): ?>
<li id ="listone" name="listone" data-role="list-divider" role="heading" class="ui-li ui-li-divider ui-bar-b ui-li-has-count ui-first-child"><?php echo $row['date']; ?></li>
<li data-corners="false" data-shadow="false" data-iconshadow="true" data-wrapperels="div" data-icon="arrow-r" data-iconpos="right" data-theme="a" >
<div class="ui-btn-inner ui-li"><div class="ui-btn-text"><a class="ui-link-inherit"></a><p class="ui-li-aside ui-li-desc"><strong></strong><?php echo $row['time']; ?></p>
<p class="ui-li-desc"><strong><?php echo $row['title']; ?></strong></p>
<p class="ui-li-desc"><?php echo $row['text']; ?></p>
<p class="ui-li-desc"><strong><?php echo $row['town']; ?></strong></p>
<a href="#popupcomment" data-rel="popup" data-position-to="window" data-transition="pop">comment</a>
<button class="commentbtn" data-rel="button" >comment</button>
<div id="createcomment" class="comment" data-theme="a" >
<form data-ajax="false" name="login-form" class="login-form" action="./comments.php" method="post" style="padding:20px 40px;">
<div class="content">
<div id="showcomments" data-theme="a" >
<?php
include("showcomments.php");
?>
<?php foreach ($comments as $keyComment => $rowComment): ?>
<div>
<p class="ui-li-desc"><strong><?php echo $rowComment['username']; ?></strong></p>
<p class="ui-li-desc"><?php echo $rowComment['comment']; ?></p>
</div>
<?php endforeach; ?>
</div>
<input type="hidden" name="id" id="id" value="<?php echo $row['id']; ?>" type="text" />
<input type="hidden" name="autorpost" id="autorpost" value="<?php echo $row['autor']; ?>" type="text" />
<textarea rows="1" name="text" id="text" class="foo"></textarea>
</div>
<div class="footer">
<input type="submit" name="submit" value="comment" class="button" data-theme="a"/>
</div>
</form>
</div>
</li>
<?php endforeach; ?>
</ul>
</div>
</div>
</div>
</div>
comments.php：
$hostname='localhost';
$user='root';
$password='';
if(isset($_POST["submit"])){
try {
$dbh = new PDO("mysql:host=localhost;dbname=searchfood", $user, $password);
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // <== add this line
// prepare your query
$query = 'INSERT INTO comments (username, autorpost, comment, id_post, time) VALUES (?, ?, ?, ?, now())';
$stmt = $dbh->prepare($query);
// bind variables
$stmt->execute(array($_COOKIE['username'], $_POST['autorpost'], $_POST['text'], $_POST['id']));
// pull last insert id
$new = $dbh->lastInsertId();
// show success message or redirect, whatever you want
echo "New Record Inserted Successfully";
$message['success'] = 'Neuer Benutzer (' . htmlspecialchars($_POST['username']) . ') wurde angelegt, <a href="login.php">weiter zur Anmeldung</a>.';
header("Location: http://".$_SERVER['HTTP_HOST']."/lendsth/main.php", true, 302);
}
catch(PDOException $e)
{
echo $e->getMessage();
}
}
最佳答案
您要为每个输入命名相同。因此，name="id"的逻辑是，无论您以何种形式提交，都将获得最后一个元素。
您应该给name属性一些上下文（因为name attr的值是作为表单输入提交的值）
<?php foreach ($result as $key => $row): ?>
<form action="./comments.php" method="post">
<input type="hidden" name="authorForm[<?php echo $row['id']; ?>][id]" id="id" value="<?php echo $row['id']; ?>"> </input>
<input type="hidden" name="authorForm[<?php echo $row['id']; ?>][autorpost]" id="autorpost" value="<?php echo $row['autor']; ?>"></input>
<textarea rows="1" name="text" id="text" class="foo"></textarea>
<input type="submit" name="submit" value="comment" class="button" data-theme="a"/>
</form>
<?php endforeach; ?>
编辑以遵循第一条评论信息：
以下是呈现2种形式的序列的脚本：
<?php
$result = array(
array(
'id' => 1,
'title' => "title_1",
'text' => "text_1",
'town' => "town_1",
'autor' => "autor_1",
'time' => "time_1"
),
array(
'id' => 2,
'title' => "title_2",
'text' => "text_2",
'town' => "town_2",
'autor' => "autor_2",
'time' => "time_2"
),
);
?>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js" ></script>
<ul >
<?php foreach ($result as $key => $row): ?>
<li id ="listone" name="listone"><?php echo $row['date'];?></li>
<li>
<div >
<?php echo $row['time'];?> <?php echo $row['title']; ?> <?php echo $row['text'];?> <?php echo $row['town'];?>
<a href="#popupcomment">comment</a>
</div>
<form name="login-form" action="./comments.php" method="post" >
<div>
<input type="hidden" name="id" id="id" value="<?php echo $row['id'];?>"/>
<input type="hidden" name="autorpost" id="autorpost" value="<?php echo $row['autor'];?>"/>
<textarea name="text" id="text" ></textarea>
</div>
<div class="footer">
<input type="submit" name="submit" value="comment" />
</div>
</form>
</li>
<?php endforeach; ?>
</ul>
因此，您可以在chrome检查器的屏幕截图中看到。发送正确的值（使用讨厌的形式输入名称，因为它们不提供上下文）
关于php - 使$ id在foreach循环中唯一，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/32830361/