在php中创建一个非常简单的1用户名/密码登录名 [英] Creating a very simple 1 username/password login in php
问题描述
我只想为1个用户进行一次登录而不存储在数据库中，但是我似乎无法使它正常工作.
I want to make a single login for just 1 user without storing in a database but I can't seem to get this to work.
我的代码:login.php
My code: login.php
<html>
<head>
<title>Login</title>
</head>
<h3>Add entry</h3>
<p> Add another Article</p>
<form action="trylog.php" method = "post">
<label for="username">Username</label> <input type="username" id="usename" name="username"><br /><br />
<label for="password">Password:</label> <input type="text" id="password" name="password"><br /><br />
<button type = "submit">Login</button>
</form>
</html>
trylog.php
trylog.php
<html>
<title>Login</title>
<body>
<?php
$usr = "admin";
$psw = "password";
$username = '$_POST[username]';
$password = '$_POST[password]';
//$usr == $username && $psw == $password
session_start();
if ($_SESSION['login']==true || ($_POST['username']=="admin" && $_POST['password']=="password")) {
echo "password accepted";
$_SESSION['login']=true;
}else {
echo "incorrect login";
}
?>
<form name="input" action="adminportal.php" method="get">
<input type="submit" value="Home">
</form>
</body>
</html>
推荐答案
您的代码可能更像:
<?php
session_start();
$errorMsg = "";
$validUser = $_SESSION["login"] === true;
if(isset($_POST["sub"])) {
$validUser = $_POST["username"] == "admin" && $_POST["password"] == "password";
if(!$validUser) $errorMsg = "Invalid username or password.";
else $_SESSION["login"] = true;
}
if($validUser) {
header("Location: /login-success.php"); die();
}
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8" />
<title>Login</title>
</head>
<body>
<form name="input" action="" method="post">
<label for="username">Username:</label><input type="text" value="<?= $_POST["username"] ?>" id="username" name="username" />
<label for="password">Password:</label><input type="password" value="" id="password" name="password" />
<div class="error"><?= $errorMsg ?></div>
<input type="submit" value="Home" name="sub" />
</form>
</body>
</html>
现在，当基于header('LOCATION:wherever.php)重定向页面时，将session_start()放在页面顶部并进行测试以确保$_SESSION['login'] === true.请记住，如果同时使用$_SESSION['login'] == 1，则==也将为true.
当然，出于安全性考虑，这不是一个好主意，但是我的示例可能会教给您使用PHP的另一种方法.
Now, when the page is redirected based on the header('LOCATION:wherever.php), put session_start() at the top of the page and test to make sure $_SESSION['login'] === true. Remember that == would be true if $_SESSION['login'] == 1 as well.
Of course, this is a bad idea for security reasons, but my example may teach you a different way of using PHP.
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