2、后臺 ：用到了兩次遞歸，首先用遞歸把數(shù)據(jù)庫中的結果重組下，重組之后，然后用遞歸輸出上面的那種前臺代碼即可
comment表結構和內容如下
然后直接讀出這個表中的所有評論?？梢缘玫饺缦聰?shù)組
Array
(
[0] => Array
(
[id] => 1
[pid] =>
[content] => 評論1
)
[1] => Array
(
[id] => 2
[pid] =>
[content] => 評論2
)
[2] => Array
(
[id] => 3
[pid] =>
[content] => 評論3
)
[3] => Array
(
[id] => 4
[pid] => 1
[content] => 評論4回復評論1
)
[4] => Array
(
[id] => 5
[pid] => 1
[content] => 評論5回復評論1
)
[5] => Array
(
[id] => 6
[pid] => 2
[content] => 評論6回復評論2
)
[6] => Array
(
[id] => 7
[pid] => 4
[content] => 評論7回復評論4
)
[7] => Array
(
[id] => 8
[pid] => 7
[content] => 評論8回復評論7
)
[8] => Array
(
[id] => 9
[pid] => 8
[content] => 評論9回復評論8
)
[9] => Array
(
[id] => 10
[pid] => 8
[content] => 評論10回復評論8
)
)
然后我們就需要把這個數(shù)組重組成上面的那種留言板形式的
其中$array就是上面讀取出來的數(shù)組，首先取出pid默認為空的，然后遞歸，在取出pid為當前評論id的數(shù)組
public static function tree($array,$child="child", $pid = null)
{
$temp = [];
foreach ($array as $v) {
if ($v['pid'] == $pid) {
$v[$child] = self::tree($array,$child,$v['id']);
$temp[] = $v;
}
}
return $temp;
}重組后，可以得到下面的這個數(shù)組，可以看到，這個數(shù)組的樣式已經(jīng)和前臺評論樣式很像了
Array
(
[0] => Array
(
[id] => 1
[pid] =>
[content] => 評論1
[child] => Array
(
[0] => Array
(
[id] => 4
[pid] => 1
[content] => 評論4回復評論1
[child] => Array
(
[0] => Array
(
[id] => 7
[pid] => 4
[content] => 評論7回復評論4
[child] => Array
(
[0] => Array
(
[id] => 8
[pid] => 7
[content] => 評論8回復評論7
[child] => Array
(
[0] => Array
(
[id] => 9
[pid] => 8
[content] => 評論9回復評論8
[child] => Array
(
)
)
[1] => Array
(
[id] => 10
[pid] => 8
[content] => 評論10回復評論8
[child] => Array
(
)
)
)
)
)
)
)
)
[1] => Array
(
[id] => 5
[pid] => 1
[content] => 評論5回復評論1
[child] => Array
(
)
)
)
)
[1] => Array
(
[id] => 2
[pid] =>
[content] => 評論2
[child] => Array
(
[0] => Array
(
[id] => 6
[pid] => 2
[content] => 評論6回復評論2
[child] => Array
(
)
)
)
)
[2] => Array
(
[id] => 3
[pid] =>
[content] => 評論3
[child] => Array
(
)
)
)
得到上面的數(shù)組后 ，再用遞歸輸出即可
public static function traverseArray($array)
{
foreach ($array as $v) {
echo "";
echo $v['content'];
if ($v['child']) {
self::traverseArray($v['child']);
}
echo "";
}
}以上就是怎么在php網(wǎng)站中實現(xiàn)一個留言板功能，小編相信有部分知識點可能是我們日常工作會見到或用到的。希望你能通過這篇文章學到更多知識。更多詳情敬請關注創(chuàng)新互聯(lián)行業(yè)資訊頻道。
本文名稱：怎么在php網(wǎng)站中實現(xiàn)一個留言板功能-創(chuàng)新互聯(lián)
轉載來源：http://weahome.cn/article/hoocd.html
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