Question

自从昨晚成功尝试后，我的登录表单重定向到用户主页时遇到了问题。填写表格后，我会按提交，但我仍然在同一页面，除了表格将被清除。所以我决定使用$ _POST方法回显我的输入，在重新提交表单后，我看到两个条目的页面显示 1 。我的代码出了什么问题？

<!DOCTYPE html>

<?php require_once("../Includes/Session.php"); ?>
<?php require_once("../Includes/DB_Connection.php"); ?>
<?php require_once("../Includes/Functions.php"); ?>
<?php require_once("../Includes/Validation_Functions.php"); ?>

<head> 

<title> eTransport: Login</title>

<link rel="stylesheet" type="text/css" href="Login_Style.css">
</head>

<html> 
<body>
<div class="div1">
    <h1 class="title"> Online eTransport Service (Fiji) </h1>

    <div>
    <form action="Login.php" method="POST">
        eTransport_ID: <input type="text" name="eTransport_ID"><br>
        Password: <input type="password" name="Password"><br>
        <input type="submit" name="Submit" value="submit"><br>
        <?php echo isset($_POST['eTransport_ID']); ?><br>
        <?php echo isset($_POST['Password']); ?>
    </form>
    </div>
</div>
</body>
</html>

<?php

$id = isset($_POST['eTransport_ID']);
$password = isset($_POST['Password']);

$checked_id= mysql_prep($id);

$query = "SELECT eTransport_ID ,Password FROM etrans_id_details";

$login_set = mysqli_query($conn, $query);


while ($row = mysqli_fetch_assoc($login_set)){
    if ($checked_id == $row["eTransport_ID"] AND $password == $row["Password"]){
        redirect_to("Home.php");
    }
}

?>

我的代码输出$ _POST：

Answer 1

这是一个很长的答案。更换 $id = isset($_POST['eTransport_ID']); $password = isset($_POST['Password']);

与

$id = $_POST['eTransport_ID']; $password = $_POST['Password']; 并添加代码以测试它是否已设置。

使用$ _POST方法从HTML表单获取不正确的输出

1 个答案: