>我有两个表格,一个有帖子,另一个有评论:
posts
-----
ID
user_ID
text
date
comments
--------
ID
post_ID
user_ID
text
date
我想显示每个帖子,对于每个帖子,我想显示相关的评论。所以我做了两个查询:
include('bdd.php');
$reponse = $bdd->query('
SELECT posts.ID AS post_ID, posts.user_ID, posts.text, posts.date FROM posts
ORDER BY posts.ID DESC
');
while ($post = $reponse->fetch()){
//displaying a post
$get_comments=$bdd->query('SELECT * FROM comments WHERE post_ID ='.$post['post_ID']);
while($comment = $get_comments->fecth()){
//displaying a comment
echo $comment['text']
}
}
但是代码停止,只显示没有注释的第一篇文章。
尝试插入
$reponse->execute();
在第一次while
之前.或替换 $bdd->prepare();
$bdd->query();
错别字错误:
$get_comments->fecth()
检查您的fetch()
拼写
选择查询是否正确?
SELECT posts.ID AS post_ID, posts.user_ID, posts.text, posts.date
ORDER BY posts.ID DESC
它没有 FROM 子句。应该如下:
SELECT posts.ID AS post_ID, posts.user_ID, posts.text, posts.date FROM posts
ORDER BY posts.ID DESC