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環顧四周後,我設法創建了一個簡單的登錄。我可以用我的用戶名和密碼登錄,但不幸的是,登錄驗證不起作用。當我輸入錯誤的密碼或將文本框留空並單擊登錄時,表單只會被重置。它不顯示錯誤消息。我確定我錯過了一些東西,但我不知道它是什麼。PDO:登錄驗證
請幫幫我。謝謝:)
這裏是我的代碼:
的index.php
<?php
session_start();
$conn = new PDO ('mysql:host=localhost;dbname=test','root','');
if (isset($_POST['login'])){
$UserId = $_POST['UserId'];
$UserPwd = $_POST['UserPwd'];
if(empty($UserId) && empty($UserPwd)) {
$message = "Username/Password con't be empty";
}
else
{
$sql = "SELECT UserId, UserPwd FROM user WHERE UserId=? AND UserPwd=? ";
$query = $conn->prepare($sql);
$query->execute(array($UserId,$UserPwd));
if($query->rowCount() >= 1) {
$_SESSION['UserId'] = $UserId;
header("location: login.php");
}
else
{
$message = "Username/Password is wrong";
}
}
}
?>
<html>
<head><title>Login</title></head>
<body>
<form method="post" name="login">
<input type="text" name="UserId">
<input type="text" name="UserPwd">
<input type="submit" name="login" value="Login">
</form>
</body>
</html>
頁的前頭現在的工作宣告你的消息。謝謝:) @ user1234 –