Question

但在我进入回复论坛后，它显示为 this：

这是我的代码：

<?php
 session_start();
 date_default_timezone_set('Asia/Hong_Kong');
  include 'connect.php';
  include 'header.php';
  echo'<div id="content">';

$sql= "SELECT
topic_id,
topic_subject
FROM
topics
WHERE
topics.topic_id = " . mysql_real_escape_string($_GET['id']);

$result = mysql_query($sql);

if(!$result)
{
echo 'The topic could not be displayed, please try again later.' . 
mysql_error();
}
else
{
if(mysql_num_rows($result) == 0)
{
    echo 'This topic does not exist.';
}
else
{
    while($row = mysql_fetch_assoc($result))
    {
        echo '<h2>' . $row['topic_subject'] . '</h2>';
    }
}
}

$sql="SELECT
posts.post_topic,
posts.post_content,
posts.post_date,
posts.post_by,
users.user_id,
users.user_name
FROM
posts
LEFT JOIN
users
ON
posts.post_by = users.user_id
WHERE
posts.post_topic = " . mysql_real_escape_string($_GET['id']);

$result = mysql_query($sql);

if(!$result)
{
echo 'The topic could not be displayed, please try again later.' . 
mysql_error();
}
if(mysql_num_rows($result) == 0)
{
echo 'There are no topics in this category yet.';
 }
else
{
                echo'<table border="2">
                    <tr>
                    <th class="leftpart2">個朵</th>
                    <th class="rightpart2">講緊乜</th>
                    </tr>';

    while($row = mysql_fetch_assoc($result))
    {
        echo '<tr>';
        echo'<td>'.$row['user_name'].'<br>日期: '.$row['post_date'].'</td>';
        echo'<td>'.$row['post_content'].'</td>';
        echo'</tr>';
        echo'</table>';
}
}
        echo'<h2>我要回應</h2>';
        echo'<form method="post" action="reply.php?id=5">
            <p><textarea name="reply-content"></textarea></p>
            <p><input type="submit" value="回應"/></p>
            </form>';   
  echo'</div>';
 ?>

reply.php

<?php
session_start();
include 'connect.php';
include 'header.php';
echo'<div id="content">';

有人直接调用该文件，我们不想要

 if($_SERVER['REQUEST_METHOD'] != 'POST')
{
echo 'This file cannot be called directly.';
}
 else
{

检查登录状态

if(!$_SESSION['signed_in'])
{
    echo 'You must be signed in to post a reply.';
}
else
{

真实用户发布了真实回复

    $sql = "INSERT INTO 
                posts(post_content,
                      post_date,
                      post_topic,
                      post_by) 
            VALUES ('" . $_POST['reply-content'] . "',
                    NOW(),
                    " . mysql_real_escape_string($_GET['id']) . ",
                    " . $_SESSION['user_id'] . ")";

    $result = mysql_query($sql);

    if(!$result)
    {
        echo 'Your reply has not been saved, please try again later.';
    }
    else
    {
        echo 'Your reply has been saved, check out <a href="topic.php?id=' . htmlentities($_GET['id']) . '">the topic</a>.';
    }
    }
    }               
    echo'</div>';
    ?>

是第81行的错误：echo＆＃39;？

如果每个人都需要补充，请随时问我。

Answer 1

$ result包含false。你还没有检查为什么它是假的，你可以通过mysql_error（[link]）或mysql_errno（[link]）来做。

如果无法插入新行，则插入进行错误返回，或者您无权更改该表！

您应该检查您是否有权限，并且是否有必须填写＆＃39;表中的列，因为某种原因缺少某个值而引发错误。

But avoid …

Asking for help, _clarification_, or responding to other answers.

但是，请告诉我们您的错误信息是什么。

无法发帖回复

1 个答案: