12c02-1.php
来自「介绍PHP5的给类型函数应用」· PHP 代码 · 共 69 行
PHP
69 行
<?php// The login page -- First check if the user has requested to log-off$error = '';session_start();if (isset($_GET['logoff'])) { // We need to completely destroy the session. First the data: $_SESSION = array(); // If a session cookie exists, tell the browser to destroy it // (give it a time in the past) if (isset($_COOKIE[session_name()])) { setcookie(session_name(), '', time()-1000, '/'); } // Finally, finialize the session destruction: session_destroy();}// Secondly, see if the user is already logged in.elseif (isset($_SESSION['valid']) && $_SESSION['valid']) { // Bounce them to the view page:// header('Location: view.php'); header('Location: 12c02-2.php'); exit();}// 3rd, see if they attempted to log in:elseif (isset($_POST['user']) || isset($_POST['pass'])) { // Just allowing a couple of fake users here, in real life you would // probably be reading this information from a database. $user = isset($_POST['user']) ? $_POST['user'] : ''; $pass = isset($_POST['pass']) ? $_POST['pass'] : ''; if ( ( ($user == 'tanderson') && ($pass == 'Z1ON0101') ) || ( ($user == 'asmith') && ($pass == 'brawl') ) ) { // user/pass is good, Store this fact in the session $_SESSION['valid'] = 1; $_SESSION['user'] = $_POST['user']; // and direct them to the main page// header('Location: view.php'); header('Location: 12c02-2.php'); exit(); } else { // Prepare an error statement: $error = 'Username & Password do not match, please try again'; }}// Otherwise, let's ask them to log in:?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>Login</title><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /><style>form { border: 1px solid black; padding: 10px; }#error { color: #FF0000; font-weight: bold; }</style></head><body><?php // If we had an error:if ($error) { echo "<p id=\"error\">{$error}</p>\n"; }?><form action="<?= $_SERVER['PHP_SELF'] ?>" method="post"><p>Welcome to our website, you need to log in:</p><p>Username: <input type="text" name="user" value="<?= @$user ?>"><br />Password: <input type="password" name="pass" value="<?= @$pass ?>"></p><p><input type="submit" value="Login" /></p></form></body></html>⌨️ 快捷键说明
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