php 用户cookie登录验证和mysql数据登录验证的方法
发布时间：2022-01-20 22:57:48 所属栏目：PHP教程 来源：互联网
导读：php用户cookie登录验证与mysql数据登录验证的方法: ?php unset($username); if ($_COOKIE[login]) { list($c_username,$cookie_hash) = split(,,$_COOKIE[login]); if (md5($c_username.$secret_word) == $cookie_hash) { $username = $c_username; } else
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php用户cookie登录验证与mysql数据登录验证的方法: <?php unset($username); if ($_COOKIE['login']) { list($c_username,$cookie_hash) = split(',',$_COOKIE['login']); if (md5($c_username.$secret_word) == $cookie_hash) { $username = $c_username; } else { print "You have sent a bad cookie."; } } if ($username) { print "Welcome, $username."; } else { print "Welcome, anonymous user."; } ?> 看个完整的与数据库连接登录的代码: <html> <head> <title>Log-In Page</title> </head> <body> Please enter your user details to log-in here... <form action = "authenticate.php" method = "post"> Username:<br> <input type = "text" name = "username"> <br><br> Password:<br> <input type = "text" name = "password"> <br><br> <input type = "submit" value = "Log In"> </form> </body> </html> File:authenticate.php <?php $username = $_POST['username']; $password = $_POST['password']; $self = $_SERVER['PHP_SELF']; $referer = $_SERVER['HTTP_REFERER']; if( ( !$username ) or ( !$password ) ) { header( "Location:$referer" ); exit(); } $conn=@mysql_connect( "localhost", "userName", "password" ) or die( "Could not connect" ); $rs = @mysql_select_db( "my_database", $conn ) or die( "Could not select database" ); $sql = "select * from users where user_name="$username" and password = password( "$password" )"; $rs = mysql_query( $sql, $conn ) or die( "Could not execute query" ); $num = mysql_numrows( $rs ); if( $num != 0 ) { $msg = "<h3>Welcome $username - your log-in succeeded!</h3>"; } else { header( "Location:$referer" ); exit(); } ?> <html> <head> <title>Log-In Authenticated</title> </head> <body> <?php echo( $msg ); ?> </body> </html> （编辑：源码门户网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
