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Correction status：qualified
Teacher's comments：
Collection
Collection
cookie
header.php
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title> <?php echo isset($page_title)?$page_title:'默认标题'; ?> </title> </head> <body> <h1>我是页面的头部</h1> </body> </html>
点击 "运行实例" 按钮查看在线实例
footer.php
function.php
<?php
/**
* 公共函数库
* */
//用户登陆成功之后的跳转
function redirect_user($page='index.php')
{
//默认url
$url='http://'.$_SERVER['HTPP_HOST'].dirname($_SERVER['PHP_SELF']);
}
//如果有,去掉url右侧的斜线
$url = rtrim($url, '/\\');
//添加上当前脚本名称
$url .= '/'.$page;
//跳转到指定地址
header('Location:' .$url);
exit();
//验证用户登录
function check_login($dbc,$email='',$password)
{
//初始一个保存错误信息的数组
$error=[];
//非空验证
if (empty($email)){
$error[]='邮箱不能为空';
}else{
$e=mysqli_real_escape_string($dbc,trim($email));
}
//非空验证
if(empty($password)){
$error[]='密码不能为空';
}else{
$p= mysqli_real_escape_string($dbc,trim($password));
}
//到表中进行数据验证
if(empty($error)){
//根据邮箱和密码进行验证,并返回id,name
$sql="SELECT `id`,`name`FROM`user` WHERE `email`='$e'AND`password`=sha1('$p')";
//返回查询结果
return [true, $row];
}else{
$errors[]='邮箱或密码不正确,请重新输入';
}
return[false,$error];
}点击 "运行实例" 按钮查看在线实例
connect.php
<?php
/**
* 连接数据库
*/
$dbc=mysqli_connect('127.0.0.1','root','root','php');
//判断是否成功
if(mysqli_connect_errno()){
die('连接失败'.mysqli_connect_error());
}点击 "运行实例" 按钮查看在线实例
demo1.php
<?php
// cookie
//1.设置cookie
//setcookie('username','admin',time()+3600);
//2.查看cookie: 超全局系统变量[数组]: $_COOKIE
//echo '<br>',$_COOKIE['username'];
//3.删除cookie
setcookie('username','admin',time()-3600);
echo '<br>',$_COOKIE['username'];点击 "运行实例" 按钮查看在线实例
index.php
<?php
$page_title='首页';
//加载公共头部
include'inc/header.php';
echo '<h2 style="color:red">我是首页</h2>';
//判断当前用户状态:是否登录
if(isset($_COOKIE['id']) && basename($_SERVER['PHP_SELF'])!='logout.php'){
echo '<a href="logout.php">退出</a>';
}else{
echo '<a href="login.php">登录</a>';
}
//导入页面的公共底部
include 'inc/footer.php';点击 "运行实例" 按钮查看在线实例
loggedin.php
<?php
//登录成功页面
//判断用户是否登录?
if (!isset($_COOKIE['id'])) {
require 'inc/function.php';
redirect_user();
}
$page_title = '登录成功';
//导入页面的公共头部
include 'inc/header.php';
//heredoc
echo <<< "WELCOME"
<h2 style="color:red">登录成功</h2>
<p>欢迎您: 亲爱的 {$_COOKIE['name']}</p>
<p><a href="logout.php">退出</a></p>
WELCOME;
//导入页面的公共底部
include 'inc/footer.php';点击 "运行实例" 按钮查看在线实例
login.php
<?php
if($_SERVER['REQUEST_METHOD']=='POST'){
//加载函数库
require 'inc/function.php';
//连接数据库
require 'inc/connect.php';
//验证登录
list($check,$data) =check_login($dbc,$_POST['email'],$_POST['password']);
//检测是否验证通过
if($check){
//设置cookie
setcookie('id',$data['id']);
setcookie('name',$data['name']);
//跳转
redirect_user('loggedin.php');
}else{
$error=$data;
}
//关闭
mysqli_close($dbc);
}
include 'login_page.php';点击 "运行实例" 按钮查看在线实例
login_page.php
<?php
$page_title='用户登录';
include'inc/header.php';
//错误信息提示
if(isset($errors)&&!empty($errors)){
$errors_msg='<p style="color: red"> ';
foreach($errors as $msg){
$errors_msg.=$msg.'<br>';
}
echo $errors_msg.'</p>';
}
?>
<h2 style="...">用户登录</h2>
<form action="login.php" method="post">
<p>
<label for="email">邮箱:</label>
<input type="email" name="email" id="email" value="<?php echo isset($_POST['email'])?$_POST['email']:''?>">
</p>
<p>
<label for="email">密码:</label>
<input type="password" name="password" id="password" value="<?php echo isset($_POST['password'])?$_POST['password']:''?>">
</p>
<p>
<button type="submit" name="submit" id="sumbit">登录</button>
</p>
</form>
<?php include 'inc/footer.php'?>点击 "运行实例" 按钮查看在线实例
logout.php
<?php
//登出成功页面
//判断用户是否登录?
if (!isset($_COOKIE['id'])) {
require 'inc/function.php';
redirect_user();
}else{
//退出登录,删除cookie
setcookie('id','',time()-3600);
setcookie('name','',time()-3600);
}
$page_title='退出登录';
//导入页面的公共头部
include'inc/header.php';
//heredoc
echo <<< "WELCOME"
<h2 style="color:red">退出成功</h2>
<p><a href="login.php">登录</a></p>
WELCOME;
//导入页面的公共底部
include 'inc/footer.php';点击 "运行实例" 按钮查看在线实例
手写
