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参加PHP开发学习,或许只是一次偶然的想法吧!只是想在走向社会之前体验、学习在一个公司或者说是项目团队之中如何去更有效的沟通、交流、共同合作,还有就是为毕业实习找工作增加伐码。递归|分页|树型布局 现将自己的理论了局show给人人,缺乏的地方就是分页的办法不太好,不克不及显示详细的页数,可其实又没有其它更好的处理举措,只好先如斯了,假如哪位有相似本服装论坛的分页办法,表赐教一二,二泉不堪感谢!详细可会见我的团体小网站:http://web.nyist.net/~wbgwrq,不空话了,入手下手吧......
//表的布局以下:
//creat.sql
//复杂申明:rootid 论题序数;layer:帖子条理,缩进的根据;orders:帖子的按次
create table over_post (
id int(11) not null auto_increment,
title varchar(80) not null default '',
content text,
postat datetime not null default '0000-00-00 00:00:00',
readed int(11) not null default '0',
size int(11) not null default '0',
rootid int(11) not null default '0',
orders int(4) not null default '0',
layer int(4) not null default '0',
primary key (id)
) type=myisam;
//creat.sql end
//宣布根帖,即rootid,layer,orders为0的帖子
//said.php
//begin
<form method="post" action="post.php">
<table width="81%" border="0" cellspacing="1" cellpadding="0" align="center">
<tr bgcolor="#66cccc">
<td height="35" width="23%">
<div align="right">你的设法:
</div>
</td>
<td height="35" width="77%">
<input type="text" name="title" size="50" class="eq">
</td>
</tr>
<tr bgcolor="#66cccc">
<td height="39" width="23%">
<div align="right">你的内容:
</div>
</td>
<td height="39" width="77%">
<textarea name="content" cols="50" rows="10" class="eq"></textarea>
</td>
</tr>
<tr bgcolor="#66cccc">
<td colspan="2" height="24">
</td>
</tr>
<tr bgcolor="#66cccc">
<td colspan="2" height="28">
<div align="center">
<input type="submit" name="said" value="先说这些">
<input type="reset" name="submit2" value="从头再来">
</div>
</td>
</tr>
</table>
</form>
//said.php end
//帖子内容,且在本页停止跟帖
//content.php
//begin
<?php
$result=mysql_query("select
over_post.title,over_post.content,over_post.postat,over_post.readed,over_post.rootid,over_post.la
yer,over_post.orders from over_post where over_post.id=$id");
$readed=mysql_result($result,0,"readed");
$title=mysql_result($result,0,"title");
$content=mysql_result($result,0,"content");
$date=mysql_result($result,0,"postat");
$rootid=mysql_result($result,0,"rootid");
$orders=mysql_result($result,0,"orders");
$layer=mysql_result($result,0,"layer");
?>
<table width="90%" cellspacing="1" bgcolor="red" align="center">
<tr bgcolor="#ffffff">
<td width="12%">宣布人:</td>
</tr>
<tr bgcolor="#ffffff">
<td width="12%">主 题:</td>
<td colspan="5">《<?php echo $title; ?>》 <font color="666666"><i>【
readed:<?echo"$readed";?>】 <?echo"$date";?></i></font></td>
</tr>
<tr bgcolor="#ffffff">
<td width="12%">内 容:</td>
<td colspan="5"><?php echo $content; ?></td>
</tr>
</table>
<br>
<center>
服装论坛宣布跟帖
<form method="post" action="post.php">
<table width="78%" cellspacing="0" align="center" cellpadding="0" border="0">
<tr bgcolor="#ffffff">
<td height="24" width="12%">
<div align="right">标题:</div>
</td>
<td height="24" width="88%">
<input type="text" name="title" class="eq" size="50">
</td>
</tr>
<tr bgcolor="#ffffff">
<td height="63" width="12%">
<div align="right">内容:</div>
</td>
<td height="63" width="88%">
<textarea name="content" class="eq" cols="50" rows="10"></textarea>
</td>
</tr>
<tr bgcolor="#ffffff">
<td height="57" colspan="2">
</td>
</tr>
<tr bgcolor="#ffffff">
<td height="20" colspan="2">
<div align="center">
<input type="submit" name="reply" value="跟帖" class=in>
<input type="reset" value="重写" class=in name="reset">
<input type="hidden" name="rootid" value="<?echo $rootid;?>">
<input type="hidden" name="orders" value="<?echo$orders;?>">
<input type="hidden" name="layer" value="<?echo$layer;?>">
</div>
</td>
</tr>
</table>
//content.php end
//更新数据库
//post.php
//begin
<?
$content=nl2br(htmlspecialchars($content));
$title=htmlspecialchars($title); //决不答应在题目上利用html
$date=date("y-m-d h:i:s");
$length=strlen($content);
if(isset($said)) //宣布新帖子
{
$query="insert into over_post
values(null,'$title','$content',$user_id,'$date',0,$length,$img,'','','')";
$result=mysql_query($query) or die(mysql_error());
$r=mysql_query("select max(id) from over_post");
$rootid = mysql_result($r,0)+0;
mysql_query("update over_post set rootid=$rootid where id=$rootid")or die(mysql_error());
}
if(isset($reply)): //宣布跟帖
mysql_query("update over_post set orders=orders+1 where rootid=$rootid and orders>$orders")or
die(mysql_error());
$layer=$layer+1;
$orders=$orders+1;
$query="insert into over_post
values(null,'$title','$content',$user_id,'$date',0,$length,$img,$rootid,$orders,$layer)";
$result=mysql_query($query) or die(mysql_error());
endif;
if($result) {
include"list.php";
}
?>
//post.php end
//重头戏,显示一切帖子,并完成分页
//list.php
//begin
<?php
//找到最新论题的rootid
$query = "select max(rootid) as maxid1, min(rootid) as minid1 from over_post";
$result = mysql_query($query);
$maxid1 = mysql_result($result, 0, "maxid1");
$startid1 = mysql_result($result, 0, "minid1");
if(!($maxid1>0)) $maxid1=0;
if(!($startid1>0)) $startid1=0;
$totalid1 = $maxid1; //这是真实的最大的rootid值, $maxid1要依据$nextmaxid1变的
if($nextmaxid1>0) $maxid1=$nextmaxid1; //翻页
//盘算最小rootid:注重上面的desc,与limit联合,包管拔取纪录的局限.
//假如利用asc, 在mysql_result中检索第0个,将大大毛病!
$itemsperpage=30;
$query="select distinct rootid from over_post where rootid<=$maxid1 order by rootid desc limit
$itemsperpage";
$r=mysql_query($query);
$n=mysql_num_rows($r);
if($n>0) {
$minid1=mysql_result($r,$n-1);
$query="select * from over_post where rootid<=$maxid1 and rootid>=$minid1 order by rootid
desc,orders";
$result=mysql_query($query);
$num=mysql_num_rows($result);
}
else {
$minid1=0;
$maxid1=0;
echo "<p><center><font color='#ff0000'>没有更多的讲话内容</font></center>";
}
$query="select distinct rootid from over_post where rootid>$maxid1 order by rootid limit
$itemsperpage";
$r=mysql_query($query);
$n=mysql_num_rows($r);
if($n>0) $up=mysql_result($r,$n-1);
else $up=$totalid1;
$query="select distinct rootid from over_post where rootid<$minid1 order by rootid desc limit
$itemsperpage";
$r=mysql_query($query);
$n=mysql_num_rows($r);
if($n>0) $down=mysql_result($r,0);
else $down=$maxid1;
?>
<div align=center>
<br>
<table width="90%" border="0" cellspacing="1" cellpadding="0" align="center">
<tr bgcolor="2880ac">
<td height="20" align="center"><font color="#ffffff"><a
href="javascript:window.location.reload()" class=a1>刷新</a>
<a href="list.php" class=a1>首页</a> <a href="list.php?nextmaxid1=<?echo$up;?>" class=a1>
上页</a>
<a href="list.php?nextmaxid1=<?echo$down;?>" class=a1>下页</a> <?echo" 现存论题
:$startid1-$totalid1 ";?>
</font></td>
</tr>
<tr>
<td height="40" bgcolor="#e0f0f8" cellspacing="1">
<?php
echo"<ul>";
while ($array=mysql_fetch_array($result)){
$id=$array["id"];
$title=$array["title"];
$content=$array["content"];
$postat=$array["postat"];
$readed=$array["readed"];
$size=$array["size"];
if($size==0) $size="无内容";
else $size.=" bytes";
$rootid=$array["rootid"];
$orders=$array["orders"];
$layer=$array["layer"];
$ul=""; //入手下手树型布局
$_ul="";
for($j=0;$j<$layer;$j++){
$ul=$ul."<ul>";
$_ul=$_ul."</ul>";
}
echo $ul."<li>"."<a href=\"content.php?id=$id\" class=big>$title</a><font color=006699>($size) 【
".作者."】 $postat <被读:$readed> </font><br>".$_ul;
flush();
//树型布局停止
}
?><br></td>
</tr>
<tr bgcolor="2880ac">
<td height="20" align="center"><font color="#ffffff"><a
href="javascript:window.location.reload()" class=a1>刷新</a>
<a href="list.php" class=a1>首页</a> <a href="list.php?nextmaxid1=<?echo$up;?>" class=a1>
上页</a>
<a href="list.php?nextmaxid1=<?echo$down;?>" class=a1>下页</a> <?echo" 现存论题
:$startid1-$totalid1 ";?>
</font></td>
</tr>
</table>
</div>
//list.php end
学习数据库了,MYSQL可算是PHP的黄金搭档了,不过,虽然话是这么说,你也可能恨不得把MYSQL给生吞活剥了,因为这一行一列的东东简直让自己头晕目眩。 |
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