我一直致力于从WordPress博客中提取数据库内容,以显示在外部网站上。基本上,我目前在我的网站上有一个页面,它从我的WordPress数据库中抓取所有博客帖子,如博客标题,日期和博客内容,并按降序显示。
我现在想表明我赞同每篇文章的评论。我在很长一段时间内没有做太多编程,所以也许我在这里遗漏了一些基本概念。我列出了我在php开头运行的select查询,以从表wp_posts
和wp_comments
中获取所需的内容。
$query = "SELECT * FROM wp_comments
LEFT OUTER JOIN wp_posts
ON wp_comments.comment_post_ID = wp_posts.ID
WHERE
comment_approved = '1' AND
comment_type = ''
ORDER BY post_date DESC
LIMIT 10";
$query_result = mysql_query($query);
$num_rows = mysql_numrows($query_result);
然后我使用for循环,如下所示。
<?php
//start a loop that starts $i at 0, and make increase until it's at the number of rows
for($i=0; $i< $num_rows; $i++){
//assign data to variables, $i is the row number, which increases with each run of the loop
$blog_permalink = mysql_result($query_result, $i, "post_name");
$blog_date = mysql_result($query_result, $i, "post_date");
$blog_title = mysql_result($query_result, $i, "post_title");
$blog_content = mysql_result($query_result, $i, "post_content");
$blog_permalink = mysql_result($query_result, $i, "post_name");
$blog_comment = mysql_result($query_result, $i, "comment_content");
$blog_comment_author = mysql_result($query_result, $i, "comment_author");
$blog_comment_date = mysql_result($query_result, $i, "comment_date");
//format date
$blog_date = strtotime($blog_date);
$blog_date = strftime("%Y-%m-%d", $blog_date);
//the following HTML content will be generated on the page as many times as the loop runs.
?>
</body>
<div class="post"></div>
<span class="date"> <b><?php echo $blog_date; ?>:</b></code></span><br /><hr />
<b><?php echo $blog_title; ?></b> <br /><br />
<?php echo $blog_content; ?> <br /> <br />
<b><span>Comments</span></b> <br />
<?php echo $blog_comment_date; ?> <br />
<?php echo $blog_comment_author; ?> <br />
<?php echo $blog_comment; ?> <br /><br />
我的代码目前正在显示带有评论的博文。但是,不是在单个帖子下显示所有5条评论,而是在博文中显示5次,并在该帖子的每个实例中使用不同的评论。
我在这个for循环中尝试了一些条件if语句,用于在单个帖子下显示所有注释但是不成功。理想情况下,我想创建一个条件,如果post_title
表的comment_count
大于零,则显示comment_content
表中该帖子下的所有注释。任何反馈或有用的提示将不胜感激。
答案 0 :(得分:0)
我认为应该有两个查询来限制数据获取的数量,在第一个查询中我们应该找到最后十个帖子有注释,然后在第二个获取注释中通过它的父ID并将其添加到数组,这里是示例:< / p>
$posts = array();
$SQL = "SELECT p.ID AS post_id, p.post_date, p.post_title, Count(c.comment_ID) AS total
FROM wp_posts AS p
INNER JOIN wp_comments AS c ON p.ID = c.comment_post_ID
WHERE c.comment_approved = 1 AND c.comment_type = ''
GROUP BY p.ID, p.post_date, p.post_title
HAVING total > 0
ORDER BY p.post_date DESC
LIMIT 10";
$result = mysql_query($SQL);
if(mysql_numrows($result))
{
while($row = mysql_fetch_assoc($result))
{
//create empty array for comments
$row['comments'] = array();
$posts[$row['post_id']] = $row;
}
}
mysql_free_result($result);
//check if there is any posts with comments
if($posts)
{
//prepare post ids for IN statement
$ids = implode(', ', array_keys($posts));
$SQL2 = "SELECT c.*
FROM wp_comments AS c
WHERE c.comment_approved = 1 AND c.comment_type = '' AND c.comment_post_ID IN ({$ids})";
$result = mysql_query($SQL2);
if (mysql_numrows($result))
{
while ($row = mysql_fetch_assoc($result))
{
//assign comments to posts
$posts[$row['comment_post_id']]['comments'][] = $row;
}
}
mysql_free_result($result);
}