php实现网站留言板功能,php实现留言板
php实现网站留言板功能,php实现留言板
我要实现的就是下图的这种样式,可参考下面这两个网站的留言板,他们的实现原理都是一样的
畅言留言板样式:
网易跟帖样式:
原理
需要在评论表添加两个主要字段 id 和 pid ,其他字段随意添加,比如文章id、回复时间、回复内容、回复人什么的。
其中pid就是当前已经回复过的评论的id。
从上图可以看出,里面每一层的pid就是就是他上一层评论的id。仔细观察下上面的布局。是不是很像PHP中的多维数组?如果你能想到,那么就简单了。
实现方法
1.前台:这个比较简单 就是div嵌div。然后设置div的border和margin padding就行了
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2、后台 :用到了两次递归,首先用递归把数据库中的结果重组下,重组之后,然后用递归输出上面的那种前台代码即可
comment表结构和内容如下
然后直接读出这个表中的所有评论。可以得到如下数组
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 |
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然后我们就需要把这个数组重组成上面的那种留言板形式的
其中$array就是上面读取出来的数组,首先取出pid默认为空的,然后递归,在取出pid为当前评论id的数组
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重组后,可以得到下面的这个数组,可以看到,这个数组的样式已经和前台评论样式很像了
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 |
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得到上面的数组后 ,再用递归输出即可
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然后即可看到
原理就是这样,就是重组下数组,然后遍历输出就行了。
以上就是php实现畅言留言板和网易跟帖样式的全部过程,大家也可以尝试进行创新,希望这篇文章对大家的学习有所帮助。

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