Php 将SQL数据库值转换为变量
所以，我对php和mysql有点陌生，但我已经找到了一个登录表单，并根据我的需要对其进行了调整，因为我还不知道如何让它成为我自己。我在数据库中添加了一个名和姓列，注册表表单将这些值添加到数据库中 现在我希望能够在一个受限页面上显示名字和姓氏，我之所以需要它，是因为我希望它说：欢迎Jo博客。以下是登记表Php 将SQL数据库值转换为变量,php,sql,session,pdo,Php,Sql,Session,Pdo,所以，我对php和mysql有点陌生，但我已经找到了一个登录表单，并根据我的需要对其进行了调整，因为我还不知道如何让它成为我自己。我在数据库中添加了一个名和姓列，注册表表单将这些值添加到数据库中 现在我希望能够在一个受限页面上显示名字和姓氏，我之所以需要它，是因为我希望它说：欢迎Jo博客。以下是登记表 <?php session_start(); if( isset($_SESSION['user_id']) ){ header("Location: /"); } requi
<?php
session_start();
if( isset($_SESSION['user_id']) ){
header("Location: /");
}
require 'database.php';
$message = '';
if(!empty($_POST['email']) && !empty($_POST['password']) && !empty($_POST['firstname']) && !empty($_POST['surname'])):
// Enter the new user in the database
$sql = "INSERT INTO users (email, password, firstname, surname) VALUES (:email, :password, :firstname, :surname)";
$stmt = $conn->prepare($sql);
$stmt->bindParam(':email', $_POST['email']);
$stmt->bindParam(':password', password_hash($_POST['password'], PASSWORD_BCRYPT));
$stmt->bindParam(':firstname', $_POST['firstname']);
$stmt->bindParam(':surname', $_POST['surname']);
if( $stmt->execute() ):
$message = 'Successfully created new user';
else:
$message = 'Sorry there must have been an issue creating your account';
endif;
endif;
?>
<!DOCTYPE html>
<html>
<head>
<title>Register</title>
<?php include '../header.php'; ?>
</head>
<body>
<?php if(!empty($message)): ?>
<p><?= $message ?></p>
<?php endif; ?>
<h1>Register</h1>
<span>or <a href="login.php">login here</a></span>
<form action="register.php" method="POST">
<input type="text" placeholder="Enter your email" name="email">
<input type="password" placeholder="and password" name="password">
<input type="password" placeholder="confirm password" name="confirm_password">
<input type="text" placeholder="Enter your first name" name="firstname">
<input type="text" placeholder="Enter your surname" name="surname">
<input type="submit">
</form>
</body>
</html>
<?php
session_start();
if( isset($_SESSION['user_id']) ){
header("Location: /");
}
require 'database.php';
if(!empty($_POST['email']) && !empty($_POST['password'])):
$records = $conn->prepare('SELECT id,email,password FROM users WHERE email = :email');
$records->bindParam(':email', $_POST['email']);
$records->execute();
$results = $records->fetch(PDO::FETCH_ASSOC);
$message = '';
if(count($results) > 0 && password_verify($_POST['password'], $results['password']) ){
$_SESSION['user_id'] = $results['id'];
header("Location: /");
} else {
$message = 'Sorry, those credentials do not match';
}
endif;
?>
<!DOCTYPE html>
<html>
<head>
<title>Login</title>
<?php include '../header.php'; ?>
</head>
<body>
<?php if(!empty($message)): ?>
<p><?= $message ?></p>
<?php endif; ?>
<h1>Login</h1>
<span>or <a href="register.php">register here</a></span>
<form action="login.php" method="POST">
<input type="text" placeholder="Enter your email" name="email">
<input type="password" placeholder="and password" name="password">
<input type="submit">
</form>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title>Restricted Area</title>
<link rel="stylesheet" type="text/css" href="../assets/css/style.css">
<link href='http://fonts.googleapis.com/css?family=Comfortaa' rel='stylesheet' type='text/css'>
<?php
include '../header.php';
?>
</head>
<body>
<?php
session_start();
if(isset($_SESSION['user_id'])) { ?>
<h1>Restriced Area</h1>
<h2>You have sucessfully logged in with your credentials</h2>
<?php
} else { ?>
<script type="text/javascript">
window.location = "login.php";
</script>
<?php
exit;
}
?>
</body>
</html>
<?php
session_start();
if (!isset($_SESSION['user_id'])) {
header("Location: /login.php"); // no need to query
}
require('database.php'); // assumed to declare $conn=new PDO(...);
$loggedin = $conn->prepare('SELECT firstname,surname FROM users WHERE id=?');
$loggedin->execute([$_SESSION['user_id']]);
$results = $loggedin->fetch(PDO::FETCH_ASSOC);
if (!$results) {
header("Location: /login.php"); // unsuccessful query
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Restricted Area</title>
<link rel="stylesheet" type="text/css" href="../assets/css/style.css">
<link href='http://fonts.googleapis.com/css?family=Comfortaa' rel='stylesheet' type='text/css'>
<?php include '../header.php'; ?>
</head>
<body>
<h1>Restriced Area</h1>
<h2>You have successfully logged in with your credentials</h2>
<?php echo "Welcome {$results['firstname']} {$results['surname']}"; ?>
</body>
</html>
if( $stmt->execute() ):
$message = 'Successfully created new user';
$_SESSION['firstname'] = $_POST['firstname'];
$_SESSION['surname'] = $_POST['surname'];
# redirect to login or you could just
# have the logged in at this point and..
# redirect to restricted.php..
header("Location: /login.php");
else:
$message = 'Sorry there must have been an issue creating your account';
endif;
<?php
session_start();
if (!isset($_SESSION['user_id'])) {
header("Location: /login.php");
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Restricted Area</title>
<link rel="stylesheet" type="text/css" href="../assets/css/style.css">
<link href='http://fonts.googleapis.com/css?family=Comfortaa' rel='stylesheet' type='text/css'>
<?php include '../header.php'; ?>
</head>
<body>
<h1>Welcome <?php echo $_SESSION['firstname']; ?> <?php echo $_SESSION['surname']; ?></h1>
<h2>You have sucessfully logged in with your credentials</h2>
</body>
</html>
echo$username将打印到屏幕上？用户名是否存在电子邮件，我希望它是否存在显示的名称。显示的确切位置？在最后一段代码中？好吧，没关系。。一旦你有了你的名字和姓氏，只要把它们添加到你的会话中，并显示在你喜欢的任何地方..在你的ifisset$_会话['user\u id']{的最后一段代码中，运行一个查询，选择CONCATfirstname，，从users中选择姓氏作为name，其中id=：id并获取该值。应该提供你所需要的。然后使用$row['name']其中，$row是获取的数组，它直接给出。使用$_SESSION['user\u id']变量绑定：idies，restricted.php我在带有受限区域的部分中编辑了它php Warning:PDOStatement:：execute:SQLSTATE[HY093]：无效参数编号：绑定变量的数量与第22行的/***/*********l/*********/************/register.php中的令牌数量不匹配。第22行是$loggedin->execute；所以我需要做的就是将其粘贴到restricted.php中，而不是粘贴到其他if-else语句中，它应该可以工作？@Mickmackusa这是一个公平的观点，我想最好是star我没有以正确的方式学习。所以我尝试了你的解决方案，但页面显示为空白，所以我猜if语句有问题。下面是我得到的错误：[18-Mar-2017 12:31:11 UTC]PHP致命错误：未捕获错误：在dirremoved/restricted中调用成员函数prepare on null。PHP:18和0{main}在第18行的dirremoved/restricted.php中抛出：echo Test.$_SESSION[user_id]；它在页面上显示Test 22，其中22是数据库中的id。这是运行的if-else语句：页面外观没有变化，或者错误日志中的错误没有变化，堆栈跟踪：0{main}在第18行的directoryremoved/restricted.php中抛出，我决定使用另一个，因为这意味着我不会在会话中存储人名等，无论如何，感谢您的解决方案