PHP development small forum tutorial complete code homepage

Create homepage code index.php

##This page has added login, registration, and exit functions, and uses session to determine whether the user is logged in

##<?php

if($_SESSION ['username']){

?>
<a href="?act=loginout">Exit</a>
<?php }
else{
?>
<a href="login.html">Login</a>|<a href="reg.html">Register</a>
<? php
}
?>

## and destroy the session

<?php

session_start();

if($_GET['act']=="loginout"){

$_SESSION ['username']='';
?>
<script>
location.href="?";
</script>
<?
exit;
}

#index.php Complete code

<?php
session_start();
if($_GET['act']=="loginout"){
 $_SESSION['username']='';
 ?>
 <script>
        location.href="?";
    </script>
    <?
    exit;
}
header("Content-type:text/html;charset=utf-8");    //设置编码
$servername = "localhost";
$username = "root";
$password = "root";
$dbname = "mybbs";
// 创建连接
$conn = mysqli_connect($servername, $username, $password, $dbname);
mysqli_set_charset($conn,'utf8'); //设定字符集
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>论坛</title>
    <style>
        .cen{
            width: 55%;
            margin: 0 auto;
            text-align: right;
            margin-top: 30px;
        }
        table{
            width: 55%;
            margin-top: 10px;
        }
        .title{
            background-color: #B10707;
            font-size: 17px;
            color: white;
        }
        .right{
            margin-left: 120px;
        }
    </style>
</head>
<body>
<div class="cen">
    <?php
    if($_SESSION['username']){
 ?>
 <a href="?act=loginout">退出</a>
    <?php }
 else{
 ?>
 <a href="login.html">登录</a>|<a href="reg.html">注册</a>
    <?php
 }
 ?>
</div>
<table border="1px" cellspacing="0" cellpadding="8"align="center">
    <tr class="title">
        <td COLSPAN="3">
            论坛列表<span class="right">[<a style="color: white" href="add_forum.php">添加</a> ]</span>
        </td>
    </tr>
    <tr>
        <td width="10%"><strong>主题</strong></td>
        <td width="40"><strong>论坛</strong></td>
        <td width="15"><strong>最后更新</strong></td>
    </tr>
    <?php
 $sql="select * from forums";
 $que=mysqli_query($conn,$sql);
 $sum=mysqli_num_rows($que);
 if($sum>0) {
 while ($row = mysqli_fetch_array($que)) {
 ?>
 <tr>
                <td><?php echo $row['subject'] ?></td>
                <td><?php echo "<div class=\"bold\"><a class=\"forum\" href=\"forums.php?F=" . $row['id'] . "\">" . $row["forum_name"] . "</a></div>"
 . $row["forum_description"] ?></td>
                <td>
                    <div><?php echo $row["last_post_time"]?></div>
                </td>
            </tr>
            <?php
 }
    }else{
 echo "<tr><td colspan='3'>对不起，论坛正在建设中，感谢你的关注......</td></tr>";
    }
 ?>
</table>
</body>
</html>

Continuing Learning

new file

<?php session_start(); if($_GET['act']=="loginout"){ $_SESSION['username']=''; ?> <script> location.href="?"; </script> <? exit; } header("Content-type:text/html;charset=utf-8"); //设置编码 $servername = "localhost"; $username = "root"; $password = "root"; $dbname = "mybbs"; // 创建连接 $conn = mysqli_connect($servername, $username, $password, $dbname); mysqli_set_charset($conn,'utf8'); //设定字符集 ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>论坛</title> <style> .cen{ width: 55%; margin: 0 auto; text-align: right; margin-top: 30px; } table{ width: 55%; margin-top: 10px; } .title{ background-color: #B10707; font-size: 17px; color: white; } .right{ margin-left: 120px; } </style> </head> <body> <div class="cen"> <?php if($_SESSION['username']){ ?> <a href="?act=loginout">退出</a> <?php } else{ ?> <a href="login.html">登录</a>|<a href="reg.html">注册</a> <?php } ?> </div> <table border="1px" cellspacing="0" cellpadding="8"align="center"> <tr class="title"> <td COLSPAN="3"> 论坛列表<span class="right">[<a style="color: white" href="add_forum.php">添加</a> ]</span> </td> </tr> <tr> <td width="10%"><strong>主题</strong></td> <td width="40"><strong>论坛</strong></td> <td width="15"><strong>最后更新</strong></td> </tr> <?php $sql="select * from forums"; $que=mysqli_query($conn,$sql); $sum=mysqli_num_rows($que); if($sum>0) { while ($row = mysqli_fetch_array($que)) { ?> <tr> <td><?php echo $row['subject'] ?></td> <td><?php echo "<div class=\"bold\"><a class=\"forum\" href=\"forums.php?F=" . $row['id'] . "\">" . $row["forum_name"] . "</a></div>" . $row["forum_description"] ?></td> <td> <div><?php echo $row["last_post_time"]?></div> </td> </tr> <?php } }else{ echo "<tr><td colspan='3'>对不起，论坛正在建设中，感谢你的关注......</td></tr>"; } ?> </table> </body> </html>

submit Reset Code

Automatic operation

PHP development small forum tutorial complete code homepage

ElementaryImperial CMS enterprise imitation website tutorial

ElementaryNewbies with zero foundation in WordPress build personal blogs and corporate websites

ElementaryUltimate CMS zero-based website building instruction video

ElementaryFront-end project-Shangyou [HTML/CSS/JS technology comprehensive practice]

IntermediateVue3.0 from 0 to build a universal backend management system project practice

ElementaryZero-based front-end course [Vue advanced learning and practical application]

ElementaryWEB front-end tutorial [HTML5+CSS3+JS]

ElementaryQuick introduction to apipost

IntermediateVue3+TypeScript practical tutorial-enterprise-level project practice

ElementaryLet's briefly talk about starting a business in PHP

IntermediateVUE e-commerce project (front-end & back-end dual project actual combat)

ElementaryApipost practical application [api, interface, automated testing, mock]