使用Laravel的PHP注释系统 [英] PHP Comment System using Laravel
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问题描述
我正在使用laravel PHP开发网站,并尝试使用以下结构创建评论系统:
I am developing a website using laravel PHP and trying to do a comment system using the following structure:
- Comment 1 (id = 1)
-- Reply 1 (id = 2) (parent_id = 1)
--- Reply 2.1 (id = 3) (parent_id = 2)
-- Reply 2 (id = 4) (parent_id = 1)
我想知道如何做一个foreach来解决这个问题?由于我不知道一个评论会有多少个孩子评论.
I am wondering how would I do a foreach to cover that? Since i don't know how many child comments a comment will have.
推荐答案
Table Like:
+------------+-----------+---------+
| comment_id | parent_id | comment |
+------------+-----------+---------+
| 1 | 0 | test |
| 2 | 1 | test1 |
| 3 | 0 | test2 |
| 4 | 0 | test3 |
| 5 | 1 | test4 |
| 6 | 2 | test4 |
| 7 | 4 | test5 |
| 8 | 5 | test6 |
| 9 | 6 | test7 |
| 10 | 4 | test8 |
| 11 | 3 | test9 |
+------------+-----------+---------+
Get first level parent:
$comments = Comment::where('parent_id', '0')->orderBy('comment_id', 'asc')->get();
$result = array();
foreach($comments as $comment){
$list = array();
$list = array_merge($list, [['comment_id' => $comment->comment_id, 'parent_id' => $comment->parent_id, 'comment' => $comment->comment]]);
$result = array_merge($result, $this->get_child_comment($comment->comment_id,0, $list));
}
function get_child_comment($pid,$level,$list=array()) {
$sub_comments = Comment::where('parent_id','=',$pid)->where('comment_id','!=',$pid)->orderBy('comment_id', 'asc')->get();
foreach($sub_comments as $sub_comment){
$space=" "; sigm='-';
for($j=0; $j<=$level; $j++)
{
$space .=$space;
}
for($j=0; $j<=$level; $j++)
{
$space .= $sigm;
}
$sub_comment->comment = html_entity_decode($space, ENT_QUOTES, "utf-8").' '.$sub_comment->comment;
$list = array_merge($list, array(['comment_id' => $sub_comment->comment_id, 'parent_id' => $sub_comment->parent_id, 'comment' => $sub_comment->comment]));
$list = $this->get_child_comment($sub_comment->comment_id, $level+1, $list);
}
return $list;
}
}
return get array.simple print using foreach:
foreach($result as $val) {
echo $val['comment'].'<br>';
}
Output:
test
- test1
-- test4
--- test7
- test4
-- test6
test2
- test9
test3
- test5
- test8
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