• 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

    复制代码
    <!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>
    复制代码
    复制代码
    <!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]}({$bfb}%)<div style='200px;height:10px; border:1px solid red;'><div style=' {$bfb}%; height:10px'></div></div>";
    }    //输出标题,输出进度条
    
    
    ?>
    
    </body>
    </html>
    复制代码

    代码如上,也有注释,运行起来的结果就是这样:

    选中某项或某几项点击投票后,就会出现进度条

    进度条的变化随着你的选项而变化

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  • 原文地址:https://www.cnblogs.com/zhaodahai/p/6830648.html
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