PHP 登录示例
使用会话进行PHP登录
Php登录脚本用于为我们的网页提供身份验证。脚本在用户提交登录按钮后执行。
登录页面
登录页面应该如下所示，并且基于会话工作。如果用户关闭会话，它将擦除会话数据。
<?php
ob_start();
session_start();
?>
<?
// error_reporting(E_ALL);
// ini_set("display_errors", 1);
?>
<html lang = "en">
<head>
<title>Tutorialspoint.com</title>
<link href = "css/bootstrap.min.css" rel = "stylesheet">
<style>
body {
padding-top: 40px;
padding-bottom: 40px;
background-color: #ADABAB;
}
.form-signin {
max-width: 330px;
padding: 15px;
margin: 0 auto;
color: #017572;
}
.form-signin .form-signin-heading,
.form-signin .checkbox {
margin-bottom: 10px;
}
.form-signin .checkbox {
font-weight: normal;
}
.form-signin .form-control {
position: relative;
height: auto;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
padding: 10px;
font-size: 16px;
}
.form-signin .form-control:focus {
z-index: 2;
}
.form-signin input[type="email"] {
margin-bottom: -1px;
border-bottom-right-radius: 0;
border-bottom-left-radius: 0;
border-color:#017572;
}
.form-signin input[type="password"] {
margin-bottom: 10px;
border-top-left-radius: 0;
border-top-right-radius: 0;
border-color:#017572;
}
h2{
text-align: center;
color: #017572;
}
</style>
</head>
<body>
<h2>Enter Username and Password</h2>
<div class = "container form-signin">
<?php
msg = '';
if (isset(_POST['login']) && !empty(_POST['username']) && !empty(_POST['password'])) {
if (_POST['username'] == 'tutorialspoint' &&_POST['password'] == '1234') {
_SESSION['valid'] = true;_SESSION['timeout'] = time();
_SESSION['username'] = 'tutorialspoint';
echo 'You have entered valid use name and password';
}else {msg = 'Wrong username or password';
}
}
?>
</div> <!-- /container -->
<div class = "container">
<form class = "form-signin" role = "form"
action = "<?php echo htmlspecialchars(_SERVER['PHP_SELF']); ?>" method = "post">
<h4 class = "form-signin-heading"><?php echomsg; ?></h4>
<input type = "text" class = "form-control"
name = "username" placeholder = "username = tutorialspoint"
required autofocus></br>
<input type = "password" class = "form-control"
name = "password" placeholder = "password = 1234" required>
<button class = "btn btn-lg btn-primary btn-block" type = "submit"
name = "login">Login</button>
</form>
Click here to clean <a href = "logout.php" tite = "Logout">Session.
</div>
</body>
</html>
Logout.php
它将删除会话数据。
<?php
session_start();
unset(_SESSION["username"]);
unset(_SESSION["password"]);
echo 'You have cleaned session';
header('Refresh: 2; URL = login.php');
?>
将会产生以下的结果 −
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