PHP-登录示例

使用会话登录PHP

Php登录脚本用于为我们的网页提供身份验证。提交用户登录按钮后，脚本将执行。

登录页面

登录页面应如下所示，并基于会话进行工作。如果用户关闭会话，它将清除会话数据。

现场演示

<?php ob_start();
   session_start();
??>


   // error_reporting(E_ALL);
   // ini_set("display_errors", 1);
?>


   
   
      <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>
      
   
    
   
      
      <h2>Enter Username and Password</h2> 
      <div>
         
         <?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>
      
         <form role="form" action="<?php%20echo%20htmlspecialchars(%24_SERVER%5B'PHP_SELF'%5D);%20%0A%20%20%20%20%20%20%20%20%20%20%20%20?>" method="post">
            <h4><?php echo $msg; ??></h4>
            <input type="text" name="username" placeholder="username = tutorialspoint" required="" autofocus="">
            <input type="password" name="password" placeholder="password = 1234" required="">
            <button type="submit" name="login">Login</button>
         </form>
            
         Click here to clean <a href="logout.php" tite="Logout">Session.
         
      </a></div> 
      
   

注销.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');
??>

它将产生以下结果-