今天在bt5中一不小心发现了自己实习时，看php写的一个php分页代码。没啥看点，看了跟网上他们写的也没啥不同。
贴出来也给跟我一样的菜鸟瞅瞅吧。我这php算是速成产品，当时写个这分页，也出现不少问题。不过问题出现的多，才能学到东西，哈哈·····喜欢问题···
我的数据库就两个字段一个id，一个doc，id还是自增字段。
<title><span style="color: #000000;">
ShowData
</span></title>
<body>
<h2>ShowData</h2>
<span style="color: #000000;">php
</span><span style="color: #008000;">//</span><span style="color: #008000;">连接数据库 </span>
<span style="color: #800080;">$page</span> = 1<span style="color: #000000;">;
</span><span style="color: #800080;">$db</span> = <span style="color: #008080;">mysql_connect</span>('127.0.0.1','root','toor'<span style="color: #000000;">);
</span><span style="color: #008080;">mysql_select_db</span>('test',<span style="color: #800080;">$db</span><span style="color: #000000;">);
</span><span style="color: #800080;">$pagesize</span> = 3; <span style="color: #008000;">//</span><span style="color: #008000;">每页显示到数量
//计算一共有多少记录，用于计算页数</span>
<span style="color: #800080;">$rs</span> = <span style="color: #008080;">mysql_query</span>("select count(*) from info",<span style="color: #800080;">$db</span><span style="color: #000000;">);
</span><span style="color: #800080;">$row</span> = @<span style="color: #008080;">mysql_fetch_array</span>(<span style="color: #800080;">$rs</span><span style="color: #000000;">);
</span><span style="color: #800080;">$numrows</span> = <span style="color: #800080;">$row</span>[0<span style="color: #000000;">];
</span><span style="color: #008000;">//</span><span style="color: #008000;">计算页数</span>
<span style="color: #800080;">$pages</span> = <span style="color: #008080;">intval</span>(<span style="color: #800080;">$numrows</span> / <span style="color: #800080;">$pagesize</span><span style="color: #000000;">);
</span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$numrows</span> % <span style="color: #800080;">$pagesize</span><span style="color: #000000;">)
{
</span><span style="color: #800080;">$pages</span>++<span style="color: #000000;">;
}
</span><span style="color: #008000;">//</span><span style="color: #008000;">设置页数</span>
<span style="color: #0000ff;">if</span> (<span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$_GET</span>['page'<span style="color: #000000;">]))
{
</span><span style="color: #800080;">$page</span> = <span style="color: #008080;">intval</span>(<span style="color: #800080;">$_GET</span>['page'<span style="color: #000000;">]);
}
</span><span style="color: #0000ff;">else</span><span style="color: #000000;">
{
</span><span style="color: #800080;">$page</span> = 1; <span style="color: #008000;">//</span><span style="color: #008000;">其他情况，都指向第一页</span>
<span style="color: #000000;"> }
</span><span style="color: #008000;">//</span><span style="color: #008000;">计算记录的偏移量</span>
<span style="color: #800080;">$offset</span> = <span style="color: #800080;">$pagesize</span> * (<span style="color: #800080;">$page</span> - 1<span style="color: #000000;">);
</span><span style="color: #008000;">//</span><span style="color: #008000;">读取指定记录</span>
<span style="color: #800080;">$rs</span> = <span style="color: #008080;">mysql_query</span>("select * from info order by id limit <span style="color: #800080;">$offset</span>,<span style="color: #800080;">$pagesize</span>",<span style="color: #800080;">$db</span><span style="color: #000000;">);
</span><span style="color: #008000;">//</span><span style="color: #008000;">把数据用表格显示出来</span>
<span style="color: #0000ff;">if</span> (<span style="color: #800080;">$row</span> = @<span style="color: #008080;">mysql_fetch_array</span>(<span style="color: #800080;">$rs</span><span style="color: #000000;">))
{
</span><span style="color: #800080;">$i</span> = 0<span style="color: #000000;">;
</span>?>
<table border="0" width="80%">
<tr>
<td width="50%">
<p align="center">ID</p></td>
<td width="50%">
<p align="center">DOC</p></td>
</tr>
<span style="color: #000000;">php
</span><span style="color: #0000ff;">do</span><span style="color: #000000;">{
</span><span style="color: #800080;">$i</span>++<span style="color: #000000;">;
</span>?>
<tr align="center">
<td width="50%">=<span style="color: #800080;">$row</span>['id']?></td>
<td width="50%">=<span style="color: #800080;">$row</span>['doc']?></td>
</tr>
<span style="color: #000000;">php
}
</span><span style="color: #008000;">//</span><span style="color: #008000;">循环显示数据</span>
<span style="color: #0000ff;">while</span> (<span style="color: #800080;">$row</span> = <span style="color: #008080;">mysql_fetch_array</span>(<span style="color: #800080;">$rs</span><span style="color: #000000;">));
</span><span style="color: #0000ff;">echo</span> "</table>"<span style="color: #000000;">;
}
</span><span style="color: #0000ff;">echo</span> "<div align="center"> 共".<span style="color: #800080;">$pages</span>."页(".<span style="color: #800080;">$page</span>."/".<span style="color: #800080;">$pages</span>.")"<span style="color: #000000;">;
</span><span style="color: #0000ff;">for</span> (<span style="color: #800080;">$i</span> = 1;<span style="color: #800080;">$i</span> $page;<span style="color: #800080;">$i</span>++<span style="color: #000000;">)
{
</span><span style="color: #0000ff;">echo</span> "$i."'>[".<span style="color: #800080;">$i</span>."]"<span style="color: #000000;">;
}
</span><span style="color: #0000ff;">echo</span> "[".<span style="color: #800080;">$page</span>."]"<span style="color: #000000;">;
</span><span style="color: #0000ff;">for</span> (<span style="color: #800080;">$i</span> = <span style="color: #800080;">$page</span> + 1;<span style="color: #800080;">$i</span> $pages;<span style="color: #800080;">$i</span>++<span style="color: #000000;">)
{
</span><span style="color: #0000ff;">echo</span> "$i."'>[".<span style="color: #800080;">$i</span>."]"<span style="color: #000000;">;
}
</span><span style="color: #0000ff;">echo</span> "</div>"<span style="color: #000000;">;
</span>?>
<p> </p>
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