实现“上一页”和“下一页按钮

<?php
//本例子摘自phpbuilder.com
//稍加翻译
//sprming@netease.com

$limit=20; // 每页显示的行数
$numresults=mysql_query("select * from TABLE where YOUR CONDITIONAL HERE order by WHATEVER");//换成你所需要的sql语句
$numrows=mysql_num_rows($numresults);

// next determine if offset has been passed to script, if not use 0
if (empty($offset)) {
$offset=1;
}

// 得到查询结果
$result=mysql_query("select id,name,phone ".
"from TABLE where YOUR CONDITIONAL HERE ".
"order by WHATEVER limit $offset,$limit");

// 现在显示查询结果
while ($data=mysql_fetch_array($result)) {
// 在这里插入您要显示的结果以及样式
}

// 显示按钮

if ($offset！=1) { // bypass PREV link if offset is 1
$prevoffset=$offset-20;
print "<a href=\"$PHP_SELF?offset=$prevoffset\">上一页 \n";
}

// 计算页面数
$pages=intval($numrows/$limit);

// $pages now contains int of pages needed unless there is a remainder from division
if ($numrows%$limit) {
// has remainder so add one page
$pages++;
}

for ($i=1;$i<=$pages;$i++) { // 显示页数
$newoffset=$limit*($i-1);
print "<a href=\"$PHP_SELF?offset=$newoffset\">$i \n";
}

// check to see if last page
if (!(($offset/$limit)==$pages) && $pages!=1) {
// not last page so give NEXT link
$newoffset=$offset+$limit;
print "<a href=\"$PHP_SELF?offset=$newoffset\">下一页

\n";
}

?>