PHP開發 小型論壇教學之完整程式碼首頁
建立首頁程式碼 index.php
<?php
if($_SESSION ['username']){?>
<a href="?act=loginout">退出</a>
<?php }
else{
?>
<a href="login.html">登入</a>|<a href="reg.html">註冊</a>
<? php
}
?>
<?php }
else{
?>
<a href="login.html">登入</a>|<a href="reg.html">註冊</a>
<? php
}
?>
#以及銷毀session <?php
session_start();if($_GET['act']=="loginout"){
$_SESSION ['username']='';
<?php session_start(); if($_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>#########