php完整的注册登录代码

作者：——嘘丶低调发布日期:2026-01-29 浏览:717

下面是一个简单的PHP注册和登录的完整代码示例：

注册代码（register.php）：

<?php
// 连接数据库
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "mydb";

$conn = mysqli_connect($servername, $username, $password, $dbname);

// 检查连接是否成功
if (!$conn) {
    die("连接失败: " . mysqli_connect_error());
}

// 处理注册表单提交
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $name = $_POST["name"];
    $email = $_POST["email"];
    $password = $_POST["password"];

    // 插入用户数据到数据库
    $sql = "INSERT INTO users (name, email, password) VALUES ('$name', '$email', '$password')";

    if (mysqli_query($conn, $sql)) {
        echo "注册成功";
    } else {
        echo "注册失败: " . mysqli_error($conn);
    }
}

// 关闭数据库连接
mysqli_close($conn);
?>

<!DOCTYPE html>
<html>
<head>
    <title>注册</title>
</head>
<body>
    <h2>注册</h2>
    <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>">
        <label>姓名:</label>
        <input type="text" name="name" required><br><br>
        <label>邮箱:</label>
        <input type="email" name="email" required><br><br>
        <label>密码:</label>
        <input type="password" name="password" required><br><br>
        <input type="submit" value="注册">
    </form>
</body>
</html>

登录代码（login.php）：

<?php
// 连接数据库
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "mydb";

$conn = mysqli_connect($servername, $username, $password, $dbname);

// 检查连接是否成功
if (!$conn) {
    die("连接失败: " . mysqli_connect_error());
}

// 处理登录表单提交
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $email = $_POST["email"];
    $password = $_POST["password"];

    // 查询数据库中是否存在匹配的用户
    $sql = "SELECT * FROM users WHERE email='$email' AND password='$password'";
    $result = mysqli_query($conn, $sql);

    if (mysqli_num_rows($result) > 0) {
        echo "登录成功";
    } else {
        echo "登录失败";
    }
}

// 关闭数据库连接
mysqli_close($conn);
?>

<!DOCTYPE html>
<html>
<head>
    <title>登录</title>
</head>
<body>
    <h2>登录</h2>
    <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>">
        <label>邮箱:</label>
        <input type="email" name="email" required><br><br>
        <label>密码:</label>
        <input type="password" name="password" required><br><br>
        <input type="submit" value="登录">
    </form>
</body>
</html>

请注意，这只是一个简单的示例，没有包含任何安全性措施。在实际应用中，您应该使用密码哈希、防止SQL注入等安全措施来保护用户数据。

上一篇：php环境监测

下一篇：php jquery $