后台登录php模版

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $username = $_POST['username'];
    $password = $_POST['password'];

    // 验证逻辑
    if ($username == "admin" && $password == "password") {
        echo "登录成功";
    } else {
        echo "用户名或密码错误";
    }
}
?>

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $username = $_POST['username'];
    $password = $_POST['password'];

    // 验证逻辑
    if ($username == "admin" && $password == "password") {
        header("Location: dashboard.php");
        exit();
    } else {
        echo "用户名或密码错误";
    }
}
?>

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $username = htmlspecialchars($_POST['username']);
    $password = htmlspecialchars($_POST['password']);

    // 验证逻辑
    if ($username == "admin" && $password == "password") {
        header("Location: dashboard.php");
        exit();
    } else {
        echo "用户名或密码错误";
    }
}
?>