运用php做投票题，例题

要求大概是这样的，有一个题目，题目下面是复选框，要求点完复选框提交后会变成进度条，各选项的进度条百分比，和投票数量

首先还是要在数据库建两张表，如下：

要完成这个题目，需要建两个页面

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head><body>
<form action="toupiaojg.php" method="post">
<?php
include("./fengzhuang.php");      //引入数据库，当前目录下
$db = new fengzhuang();           //造对象$sql = "select * from diaoyantimu";       //sql语句 查询$attr = $db->Query($sql);                  //返回二维数组echo "{$attr[0][1]}<br>";                   //输出题目名称$code = $attr[0][0];
$sxx = "select * from diaoyanxuanxiang where timudaihao='{$code}'";    //查询所有选项$axx = $db->Query($sxx);foreach($axx as $v)
{
    echo "<input type='checkbox' value='{$v[0]}' name='xx[]' />$v[1]<br>";             //输出所有选项内容，在它前面加复选框，以数组方式提交
}?>
<input type="submit" value="投票" />
</form>
</body>
</html>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head><body>
<?php
include("./fengzhuang.php");
$db = new fengzhuang();
$attr = $_POST["xx"];     //取数组foreach($attr as $v)     //用循环
{
    $sql = "update diaoyanxuanxiang set numbers=numbers+1 where ids='{$v}'";  //写sql语句，每次修改一个
    $db->Query($sql,0);    //调用执行
}//显示结果
$sql = "select * from diaoyanxuanxiang";
$shuzu = $db->Query($sql);$szs = "select sum(numbers) from diaoyanxuanxiang";
$azs = $db->Query($szs);
$zs = $azs[0][0];foreach($shuzu as $v)    //遍历显示
{
    $bfb = ($v[2]/$zs)*100;  //选项人数除总数 ，再乘100    echo "{$v[1]}：{$v[2]}({$bfb}%)<div style='width:200px;height:10px; border:1px solid red;'><div style='background-color:green; width:{$bfb}%; height:10px'></div></div>";
}    //输出标题，输出进度条?></body>
</html>