Question

我正在尝试按照本教程https://www.youtube.com/watch?v=kebwxI1Bw88创建论坛。我已经成功地跟着它，直到这一点，但出于某种原因用户在某个主题中创建论坛帖子的链接无法正常工作。任何人都可以看到我的代码有任何问题或发现任何原因，为什么这不起作用。我无法看到我的代码有任何问题，我已按照教程的说法进行了操作。

该链接位于第一个if语句中。

该链接应显示在此页面上，并且尚未创建文件create_topic.php。

 <?php session_start();?>
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Forum</title>
<link href="styles.css" rel="stylesheet" type="text/css">
<script>var __adobewebfontsappname__="dreamweaver"</script>
<script src="http://use.edgefonts.net/source-sans-pro:n6:default.js" type="text/javascript"></script>

</head>

<body>
<div id="wrapper">
  <header id="top">
    <h1>ITSize</h1>
    <nav id="mainnav">
      <ul>
        <li><a href="Index.php">Home</a></li>
        <li><a href="Fourth Page.html">Register</a></li>
        <li><a href="Second Page.html">Revise</a></li>
        <li><a href="Forum.php">Forum</a></li>
      </ul>
    </nav>
  </header>
  <article id="main">
  <br>
  <br>
 <?php 
 include_once("DBconnect.php");
 $cid= $_GET['cid'];

 if (isset($_SESSION['uid'])){
     $logged= " | <a href='create_topic.php?cid=".$cid."'>Click here to create a topic</a>";
 }else{
     $logged = " | Please log in to create topics in this forum";
 }

 $sql = "SELECT id FROM categories WHERE id='".$cid."' LIMIT 1";
 $res = mysql_query($sql) or die(mysql_error());
 if (mysql_num_rows($res) ==1){
     $sql2 = "SELECT * FROM topics WHERE category_id='".$cid."' ORDER BY topic_reply_date DESC";
     $res2 = mysql_query($sql2) or die(mysql_error());
     if (mysql_num_rows($res2)>0){
         $topics .= "<table width='100%' style='border-collapse: collapse;'>";
         $topics .= "<tr><td colspan='3'<a href='Forum.php'>Return To Forum</a>".$logged."</td></tr>";
         $topics .= "<tr style='background-colour: #dddddd;'><td>Topic Title</td><td width='65' align='center'>Replies</td><td width='65' align='center'>Views</td</tr>";
         while ($row = mysql_fetch_assoc($res2)){
         $tid = $row['id'];
         $title = $row['topic_title'];
         $views = $row['topic_views'];
         $date = $row['topic_date'];
         $creator =$row['topic_creator'];
         $topics .= "<tr><td><a href='view_topic.php?cid=".$cid."&tid=".$tid.">".$title."</a><spa class='post_info'>Posted by:".$creator." on ".$date."</span></td><td align='center'>0</td><td align='center'>".$views."</td></tr>";
         $topics .="<tr><td colspan='3'></td></tr>";
         }
     $topics .="</table>";
     }else{
         echo"<p> There are no topics in this category yet</p><br>";
     echo "<a href='Forum.php'>Return To Forum Page</a><br><br>";
     }
 }
 else{
     echo"<p> You are trying to view a category that does not exist</p><br>";
     echo "<a href='Forum.php'>Return To Forum Page</a><br><br>";

 }

 ?>

 </article>
  <aside id="sidebar">


</aside>
  <footer><a href="Third Page.html">My Account</a>
  </footer>
</div>
</body>
</html>

创建一个mysql php链接供用户在论坛中创建帖子

0 个答案: