[英]How to loop over the query results of a comments system with replies?
我试图显示数据库中的注释。 一些评论是其他评论的孩子(父母),所以在我的数据库中我把一个父的字段用null作为默认值,如果新评论是子评论我在该字段中插入父评论的id。
插入工作正常,但我面临显示系统的问题。 我尝试在其paren下显示每个子注释,并显示我的代码父元素,但子元素仍为空。
我已经尝试使用print_r
函数来查看数组中是否有数据,它显示数据,我想我遗漏了一些东西,或者我的代码构造中出现了一些逻辑错误。
if(is_array($this->comments))
{
$comments = array();
$parent_array = array();
?>
<ol>
<?php
foreach($this->comments as $key => $value) {
if($value['parent'] === 0) {
$comments[] = $value;
} else {
$parent_array['parent'][] = $value;
$comments[] = $parent_array;
}
}
foreach($comments as $key => $value) {
?>
<div>
<li style="color: #dc143c; font-size: 14pt;margin-left: 20px;">
- <?php echo $value['id']; ?>
</li>
<p> <?php echo $value['title'] ; ?></p>
<p> <?php echo $value['description'] ; ?></p>
<?php
}
}
?>
看看你的代码,我认为你没有把你的评论和子评论分组。 尝试这个
<?php
$all_comments = [];
foreach($this->comments as $key => $value){
if($value['parent'] === 0)
{
$all_comments[$value['id']]['comment'] = $value;
} else {
$all_comments[$value['parent']]['subcomment'][] = $value;
}
}
foreach($all_comments as $comment){
// display only main comments here
if(isset($comment['comment'])) {
?>
<div>
<li style="color: #dc143c; font-size: 14pt;margin-left: 20px;">
- <?php echo $comment['comment']['id']; ?>
</li>
<p> <?php echo $comment['comment']['title'] ; ?></p>
<p> <?php echo $comment['comment']['description'] ; ?></p>
<!-- All its sub-comments -->
<?php
if(isset($comment['subcomment'])) {
displaySubComment($all_comments, $comment);
}
}
}
function displaySubComment($all_comments, $comment)
{
foreach($comment['subcomment'] as $subcomment) {
?>
<h3> Sub-Comments </h3>
<p> <?php echo $subcomment['title'] ; ?></p>
<p> <?php echo $subcomment['description'] ; ?></p>
<?php
// re-iterate over itself, if more comments exist under a comment and display all
if(array_key_exists($subcomment['id'], $all_comments)) {
displaySubComment($all_comments, $all_comments[$subcomment['id']])
}
}
}
?>
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.