Operasi sesi se...LOGIN

Operasi sesi selepas log masuk pengguna (tetapan masa tamat tempoh)

Pengguna memasukkan nama pengguna dan kata laluan mereka untuk log masuk. Jika ia kosong, pangkalan data tidak dijumpai atau kata laluan salah, kembali dan log masuk semula. .

kod Seperti berikut:

success.php

微信图片_20180227161734.png

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2018/2/27 0027
 * Time: 上午 10:47
 */
header('Content-type:text/html;charset=utf-8');
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    if (empty($_POST['username'])){
        echo "<script>alert('用户名不能为空!');location.href='login.html';</script>";
    }else {
        $username=trim($_POST['username']);
    }
    if (empty($_POST['password'])){
        echo "<script>alert('密码不能为空!');location.href='login.html';</script>";
    }else{
        $password=$_POST['password'];
    }
}
$mysqli = new mysqli('localhost', 'root', 'root', 'student');
$result = $mysqli->query("SELECT password FROM user WHERE username = "."'$username'");
$rs=$result->fetch_row();
if (!empty($rs)){
    if ($password != $rs[0]) {
        echo "<script>alert('密码错误!');location.href='login.html';</script>";
    }else{
        $expire=3600;
        ini_set('session.gc_maxlifetime', $expire);//保存1小时
        if (empty($_COOKIE['PHPSESSID'])) {
            session_set_cookie_params($expire);
            session_start();
        }else{
            session_start();
            setcookie('PHPSESSID', session_id(), time() + $expire);
        }
        if(isset($_SESSION['username'])){
            exit("您已经登入了,请不要重新登入!用户名:{$_SESSION['username']}---<a href='logout.php'>注销</a>");
        }else{
            $_SESSION['username']=$_POST['username'];
        }
        echo "<script>alert('登录成功!');</script><br>";
        echo "您好!{$_SESSION['username']},欢迎回来!";
        echo "<a href='logout.php'>注销</a>";
    }
}else{
    echo "<script>alert('没有此用户!');location.href='login.html';</script>";
}

bahagian seterusnya

<?php /** * Created by PhpStorm. * User: Administrator * Date: 2018/2/27 0027 * Time: 上午 10:47 */ header('Content-type:text/html;charset=utf-8'); if ($_SERVER['REQUEST_METHOD'] == 'POST') { if (empty($_POST['username'])){ echo "<script>alert('用户名不能为空!');location.href='login.html';</script>"; }else { $username=trim($_POST['username']); } if (empty($_POST['password'])){ echo "<script>alert('密码不能为空!');location.href='login.html';</script>"; }else{ $password=$_POST['password']; } } $mysqli = new mysqli('localhost', 'root', 'root', 'student'); $result = $mysqli->query("SELECT password FROM user WHERE username = "."'$username'"); $rs=$result->fetch_row(); if (!empty($rs)){ if ($password != $rs[0]) { echo "<script>alert('密码错误!');location.href='login.html';</script>"; }else{ $expire=3600; ini_set('session.gc_maxlifetime', $expire);//保存1小时 if (empty($_COOKIE['PHPSESSID'])) { session_set_cookie_params($expire); session_start(); }else{ session_start(); setcookie('PHPSESSID', session_id(), time() + $expire); } if(isset($_SESSION['username'])){ exit("您已经登入了,请不要重新登入!用户名:{$_SESSION['username']}---<a href='logout.php'>注销</a>"); }else{ $_SESSION['username']=$_POST['username']; } echo "<script>alert('登录成功!');</script><br>"; echo "您好!{$_SESSION['username']},欢迎回来!"; echo "<a href='logout.php'>注销</a>"; } }else{ echo "<script>alert('没有此用户!');location.href='login.html';</script>"; }
babperisian kursus