php - 值 1 存储在数据库中而不是文本框值/PHP-MySql

Question

好吧，我想将 3 个文本框值存储到我的 mysqli 数据库中，运行这些代码后什么也没有发生!如果发生任何事情，则将数字“1”存储到数据库中而不是文本框值

PHP 代码:

<?php
include 'displaycustomersdb.php'; //this file give $Ccode from user sessions and config.php is in it.

global $textareamsg;
global $title;
global $reciver;
global $sender;

$textareamsg = (isset($_GET['textarea']));
$title = (isset($_GET['title']));
$reciver = (isset($_GET['reciver']));

if (isset($_GET['sendmsg'])) {
    $sql_msg = mysqli_query($link, 'INSERT INTO messaging (title, message, sender, reciver) VALUES (' . $title . ',' . $textareamsg . ',' . $Ccode . ',' . $reciver . '');
}
?>

HTML代码:

<?php include 'sendmsg.php'; ?>
<form method="get">
  <i class="fas fa-envelope-open-text"></i><input type="text" placeholder="Ttitle here ..." name="title">
  <br>
  <br>
  <i class="fas fa-user-plus"></i><input type="text" placeholder="TO" name="reciver">
  <br>
  <br>
  <textarea rows="10" cols="100" placeholder="textarea" name="textarea" style="padding:10px;"></textarea>
  <br>
  <br>
  <button type="submit" name="sendmsg"><i class="far fa-share-square"></i>Insert</button>
</form>

Answer 1

您得到 bool 值而不是值本身。请记住，如果给定值存在，isset() 返回 true 并将其作为 1 存储在您的数据库中。 我猜你打算检查值是否存在，你可以像下面那样做:

$textareamsg = isset($_GET['textarea'])? $_GET['textarea'] : '';
$title = isset($_GET['title'])? $_GET['title'] : '';
$reciver = isset($_GET['reciver'])? $_GET['reciver']: '';

你还应该像这样存储字符串值:

if (isset($_GET['sendmsg'])) {
    $sql_msg = mysqli_query($link, 'INSERT INTO messaging (title, message, sender, reciver) VALUES ("' . $title . '","' . $textareamsg . '","' . $Ccode . '","' . $reciver . '"');
}

希望对您有所帮助:)