我有以下代码，可以在我的“用户”表格中随机播放用户的输出。我希望能够按照shuffle对结果进行排序的顺序将混洗后的结果发送到新的db表。我希望每个排序结果在我的数据库中创建一个新行。
我不确定如何抓取PHP shuffle的结果并发送它。我添加了一个新的提交输入，因此当显示结果时，用户可以提交结果。在洗牌过程中不能插入结果，必须在输出结果后才能插入。
如何从shuffle获取结果并插入它们？我只想知道如何获得目前的结果。
$con = mysqli_connect("localhost", "", "", "db");
$query = mysqli_query($con, "SELECT * FROM users WHERE `group` = 3");
echo 'Normal results: <br>';
$array = array();
while ($row = mysqli_fetch_assoc($query)) {
$array[] = $row;
echo $row['firstname'] . ' ' . $row['lastname'] . '<br>';
}
?>
<form method="post">
<input type="submit" value="Shuffle" name="shuffle">
</form>
<?php
if (isset($_POST['shuffle'])) {
shuffle($array);
echo 'Shuffled results: <br>';
foreach ($array as $result) {
$shuffle_firstname = $result['firstname'];
$shuffle_lastname = $result['lastname'];
?>
<div id="shuffle_results">
<?php echo $shuffle_firstname . ' ' . $shuffle_lastname . '<br>';?>
</div>
<?php }
}
//What the new submit button will be like
<form method="post">
<input type="submit" value="Insert to db" name="insert">
</form>
更新：已添加预备声明
<?php
$con = mysqli_connect("localhost", "root", "", "db");
$query = mysqli_query($con, "SELECT * FROM users WHERE `group` = 3");
echo 'Normal results: <br>';
$array = array();
while ($row = mysqli_fetch_assoc($query)) {
$array[] = $row;
echo $row['firstname'] . ' ' . $row['lastname'] . '<br>';
}
?>
<form method="POST">
<input type="submit" value="Shuffle" name="shuffle">
</form>
<?php
if (isset($_POST['shuffle'])) {
shuffle($array);
echo 'Shuffled results: <br>';
foreach ($array as $result) {
$shuffle_id = $result['id'];
$shuffle_firstname = $result['firstname'];
$shuffle_lastname = $result['lastname'];
?>
<div id="shuffle_results">
<?php echo '<ol>' . '<li>' . $shuffle_firstname . ' ' . $shuffle_lastname . '</li>' . '</ol>' . '<br>';?>
</div>
<?php }
}
($user->lastId);
var_dump($user->insert_id);
if (isset($_POST['shuffle'])) {
shuffle($array);
?>
Shuffled results:<br>
<form method="post">
<?php
foreach ($array as $result) {
$shuffle_id = htmlentities($result['id']);
$shuffle_firstname = htmlentities($result['firstname']);
$shuffle_lastname = htmlentities($result['lastname']);
$shuffle_username = htmlentities($result['username']);
$shuffle_email = htmlentities($result['email']);
?>
<div class="shuffle_results"><?php echo $shuffle_firstname . ' ' . $shuffle_lastname; ?></div>
<input type="hidden" name="firstname[]" value="<?php echo $shuffle_firstname; ?>">
<input type="hidden" name="lastname[]" value="<?php echo $shuffle_lastname; ?>">
<?php
}
?>
<input type="submit" value="Insert to db" name="insert">
</form>
<?php
$con = mysqli_connect("localhost", "root", "", "db");
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$stmt2 = $con->prepare("INSERT INTO user_players (user_id, firstname, lastname, username, email) VALUES (?, ?, ?, ?, ?)");
if ( false===$stmt2 ) {
// Check Errors for prepare
die('Add to user players prepare() failed: ' . htmlspecialchars($con->error));
}
$stmt2->bind_param('issss', $shuffle_id, $shuffle_firstname, $shuffle_lastname, $shuffle_username, $shuffle_email);
if ( false===$stmt2 ) {
// Check errors for binding parameters
die('Add to user players bind_param() failed: ' . htmlspecialchars($stmt2->error));
}
$stmt2->execute();
if ( false===$stmt2 ) {
die('Add to user players execute() failed: ' . htmlspecialchars($stmt2->error));
}
}
答案 0 :(得分：2)
将随机播放的名称放在表单中的<input type="hidden">字段中。
if (isset($_POST['shuffle'])) {
shuffle($array);
?>
Shuffled results:<br>
<form method="post">
foreach ($array as $result) {
$shuffle_firstname = htmlentities($result['firstname']);
$shuffle_lastname = htmlentities($result['lastname']);
$shuffle_id = htmlentities($result['id']);
$shuffle_username = htmlentities($result['username']);
$shuffle_email = htmlentities($result['email']);
?>
<div class="shuffle_results"><?php echo $shuffle_firstname . ' ' . $shuffle_lastname; ?></div>
<input type="hidden" name="firstname[]" value="<?php echo $shuffle_firstname; ?>">
<input type="hidden" name="lastname[]" value="<?php echo $shuffle_lastname; ?>">
<input type="hidden" name="id[]" value="<?php echo $shuffle_id; ?>">
<input type="hidden" name="username[]" value="<?php echo $shuffle_username; ?>">
<input type="hidden" name="email[]" value="<?php echo $shuffle_email; ?>">
<?php
}
<input type="submit" value="Insert to db" name="insert">
</form>
}
提交此表单后，$_POST['firstname']和$_POST['lastname']将成为数组，因此您可以遍历它们并将它们插入到新表中。
if (isset($_POST['insert'])) {
$con = mysqli_connect("localhost", "root", "", "db");
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$stmt2 = $con->prepare("INSERT INTO user_players (user_id, firstname, lastname, username, email) VALUES (?, ?, ?, ?, ?)");
if ( false===$stmt2 ) {
// Check Errors for prepare
die('Add to user players prepare() failed: ' . htmlspecialchars($con->error));
}
$stmt2->bind_param('issss', $shuffle_id, $shuffle_firstname, $shuffle_lastname, $shuffle_username, $shuffle_email);
foreach ($_POST['id'] as $i => $shuffle_id) {
$shuffle_firstname = $_POST['firstname'][$i];
$shuffle_lastname = $_POST['lastname'][$i];
$shuffle_username = $_POST['username'][$i];
$shuffle_email = $_POST['email'][$i];
$stmt2->execute() or
die('Add to user players execute() failed: ' . htmlspecialchars($stmt2->error));
}
}
请注意，您应该使用shuffle_results DIV的类而不是ID，因为您要为结果中的每一行添加一个。 ID必须是唯一的。
您也可以将$result['id']放在insert表单中，而不包含所有其他隐藏的输入。然后处理它的脚本可以从users表中获取其他字段，并将它们放入user_players。
$stmt2 = $con->prepare("INSERT INTO user_players (user_id, firstname, lastname, username, email)
SELECT user_id, firstname, lastname, username, email
FROM users
WHERE id = ?");
$stmt2->bind_param("i", $shuffle_id);
foreach ($_POST['id'] as $shuffle_id) {
$stmt2->execute() or die('Add to user players execute() failed: ' . htmlspecialchars($stmt2->error));
}