php投票练习
Posted 小艾—21克的爱
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了php投票练习相关的知识,希望对你有一定的参考价值。
一、题目要求:建立如下两个数据库,实现投票和%的统计结果:
二、具体编写方法:
(1)、建立数据库:
里面的蓝色背景的表格名称就是我们所需的表格!
表格内容如下:
表名:diaoyantimu
表名:diaoyanxuanxiang
(2)、封装类文件:
<?php class DBDA { public $fuwuqi="localhost"; public $yonghuming="root"; public $mima="root"; public $dbconnect; function Query($sql,$type=1,$shujukuming="test") { $this->dbconnect = new mysqli($this->fuwuqi,$this->yonghuming,$this->mima,$shujukuming); if(!mysqli_connect_error()) { $result = $this->dbconnect->query($sql); if($type==1) { return $result->fetch_all(); } else { return $result; } } else { return"连接失败"; } } } ?>
(3)、投票页面(shouye.php):
<!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> <style type="text/css"> .x { float:left; } #top { width:500px; height:200px; } #bottom { width:500px; height:200px; display:none; } #fanhui { display:none; } </style> </head> <body> <form action="chuli.php" method="post"> <?php include("DBDA.class.php"); $db=new DBDA; $stm="select * from diaoyantimu limit 0,1"; $atm = $db->Query($stm); echo "<div>题目名称:{$atm[0][1]}</div>"; $sxx="select * from diaoyanxuanxiang where timudaihao=\'{$atm[0][0]}\'"; $axx=$db->Query($sxx); echo "<div id=\'top\'>"; foreach($axx as $v) { echo "<div><input type=\'checkbox\' value=\'{$v[0]}\' name=\'xx[]\'/>{$v[1]}</div>"; } echo "</div>"; ?> <div id="bottom"> <?php $sum="select sum(Numbers) from diaoyanxuanxiang where timudaihao=\'{$atm[0][0]}\'"; $asum=$db->Query($sum); $total=$asum[0][0]; foreach($axx as $v) { $bfb=($v[2]/$total)*100; echo "<div><span class=\'x\'>{$v[1]}</span> <div class=\'x\' style=\'border:1px solid blue;width:120px; height:12px\'> <div style=\'background-color:red;height:12px;width:{$bfb}%\'></div> </div> <span class=\'x\'> {$v[2]} </span> <span class=\'x\'>{$bfb}%</span> </div> <div style=\'clear:both\'></div>"; } ?> </div> <div id="anniu"> <input type="submit" value="提交"/> <input type="button" value="查看" onclick="ShowResult()"/> </div> <div id="fanhui"><input type="button" value="返回" onclick="Show()" /></div> </form> </body> <script type="text/javascript"> function ShowResult() { document.getElementById("top").style.display="none"; document.getElementById("bottom").style.display="block"; document.getElementById("fanhui").style.display="block"; document.getElementById("anniu").style.display="none"; } function Show() { document.getElementById("top").style.display="block"; document.getElementById("bottom").style.display="none"; document.getElementById("fanhui").style.display="none"; document.getElementById("anniu").style.display="block"; } </script> </html>
(4)、投票处理页面(chuli.php):
<?php $ids = $_POST["xx"]; include("DBDA.class.php"); $db = new DBDA(); foreach($ids as $v) { $sql = "update diaoyanxuanxiang set Numbers = Numbers+1 where Ids=\'{$v}\'"; $db->Query($sql,0); } header("location:shouye.php");
显示结果如下:
以上是关于php投票练习的主要内容,如果未能解决你的问题,请参考以下文章