5月8日例：投票

根据条件建立相关数据库和表，通过选项造成相关条形图的比例变化

从数据库中得到数据后，对数据进行处理，数据的关联性较强

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>

<style type="text/css">
#list{ 250px; height:200px}
#jieguo{250px; height:200px}
.x{float:left}
</style>
</head>

<body>
<form action="chuli.php" method="post">
<?php
include("../DBDA.class.php");
$db = new DBDA();

$sql = "select * from diaoyantimu limit 0,1";

$attr = $db->Query($sql);

$tmmc = $attr[0][1];
$tmdh = $attr[0][0];
echo "<div>题目名称：{$tmmc}</div>";
$sqlxx = "select * from diaoyanxuanxiang where timudaihao ='{$tmdh}'";
$attrxx = $db->Query($sqlxx);
echo "<div id='list'>";
foreach($attrxx as $v)
{
    echo "<div><input type='checkbox' value='{$v[0]}' name='xx[]' />
    <span>{$v[1]}</span>
    </div>";
    
}


?>
<input type="submit" value="提交"/>
<input type="button" value="查看结果" id="check" onclick="Showjieguo()"/>
</form>
</div>
<div id="jieguo" style="display:none">
<?php
$sqlsum = "select sum(Numbers) from diaoyanxuanxiang where 
timudaihao = '{$tmdh}'";
$attrsum = $db->Query($sqlsum);//所有人数


foreach($attrxx as $v)
{
    $name = $v[1];//选项名
    $number = $v[2];//选择该项的人数
    $bfb = ($number/$attrsum[0][0])*100;
    $bfb = round($bfb,2);
    
    echo "<div style='250px; height:30px'>
    <span class='x'>{$name}</span>
    <div class='x' style='100px; height:8px; border:1px solid red'>
    <div style='{$bfb}%; height:8px; background-color:red'></div>
    
    </div>
    <span class='x'>{$number}&nbsp;</span>
    <span class='x'>{$bfb}%</span>
    </div>";
}
?>
<input type="button" value="返回" id="fanhui" onclick="Showlost()"/>
</div>
<script type="text/javascript">
function Showjieguo()
{
    document.getElementById("list").style.display = "none";
    document.getElementById("jieguo").style.display = "block";
}
function Showlist()
{
    document.getElementById("list").style.display = "block";
    document.getElementById("jieguo").style.display = "none";
}
</script>
</body>

数据处理页面:

<?php

$attr = $_POST["xx"];

include("../DBDA.class.php");
$db = new DBDA();
foreach($attr as $v)
{
    $sql = "update diaoyanxuanxiang set Numbers = Numbers+1
    where Ids = '{$v}'";
    $db->Query($sql,1);
}
header("location:toupiao.php");

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原文地址：https://www.cnblogs.com/dongqiaozhi/p/5472240.html

5月8日 例：投票

5月8日例：投票