本文實(shí)例為大家分享了php查詢操作實(shí)現(xiàn)投票功能的代碼，供大家參考，具體內(nèi)容如下
題目：
解題方法匯總：
方法一：
1. 投票主頁面：
<!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>投票</title>
<style>
#list
{
width:400px;
height:300px;}
#jieguo
{
width:400px;
height:300px;}
.x
{
float:left;}
</style>
</head>
<body>
<form action="TouChuLi.php" method="post">
<?php
include ("DBDA.class.php");
$db=new DBDA();
//從調(diào)研題目表中找出題目代號(hào)和名稱
$sql="select * from diaoyantimu limit 0,1";
$arr=$db->query($sql);
$tmmc=$arr[0][1];
$tmdh=$arr[0][0];
echo "<div><h2>{$tmmc}:</h2></div>";
//從調(diào)研選項(xiàng)表中輸出選項(xiàng)內(nèi)容：
$sqlxx="select * from diaoyanxuanxiang where timudaihao='{$tmdh}'";
$arrxx=$db->query($sqlxx);
echo "<div id='list'>";
foreach ($arrxx as $v)
{
echo "<div><input type='checkbox' value='{$v[0]}' name='xx[]'>{$v[1]}</div><br />";
}
?>
<input type="submit" value="提交">
<input type="button" value="查看結(jié)果" id="check" onclick="Showjieguo()">
</form>
</div>
<div id="jieguo" style="display:none">
<?php
//計(jì)算總?cè)藬?shù)：
$sqlzs="select sum(numbers) from diaoyanxuanxiang where timudaihao='{$tmdh}'";
$zrs=$db->query($sqlzs);
foreach ($arrxx as $v)
{
$name=$v[1];
$number=$v[2];
if($zrs[0][0]==0)
{
$bfb = 0;
}
else
{
$bfb = ($number/$zrs[0][0])*100;
}
$bfb=round($bfb,2);
echo "<div>
<span class='x'>{$name} </span>
<div class='x' style='width:200px; height:10px; background-color:#808080'>
<div style='width:{$bfb}%; height:10px; background-color:#FF8040'> </div>
</div>
<span class='x'>{$number} </span>
<span class='x'>{$bfb}% </span>
</div>
<br />
";
}
?>
<input type="button" value="返回" id="fanhui" onclick="Showfanhui()">
</div>
<script>
function Showjieguo()
{
document.getElementById("list").style.display="none";
document.getElementById("jieguo").style.display="block";
}
function Showfanhui()
{
document.getElementById("list").style.display="block";
document.getElementById("jieguo").style.display="none";
}
</script>
</body>
</html>
2.處理投票頁面：
<?php
$arr=$_POST["xx"];
include ("../DBDA.class.php");
$db=new DBDA();
foreach($arr as $v)
{
$sql = "update diaoyanxuanxiang set numbers = numbers+1 where ids = '{$v}'";
$db->Query($sql,1);//1代表$sql的類型
}
header ("location:TouPiao.php");
?>
3. 建立訪問數(shù)據(jù)庫的類,封裝用于引用：
<?php
//執(zhí)行一個(gè)sql語句，返回相應(yīng)的結(jié)果
class DBDA
{
public $host="localhost";//數(shù)據(jù)庫服務(wù)器地址
public $uid="root";//數(shù)據(jù)庫用戶名
public $password="";//數(shù)據(jù)庫密碼
//執(zhí)行SQL語句的方法
//參數(shù)里面：$sql代表要執(zhí)行的sql語句；$type是sql語句的類型，0代表查詢，1代表其他(增刪改)；$db代表要操作的數(shù)據(jù)庫
function Query($sql,$type=0,$db="mydb")
{
//造連接對(duì)象
$dbconnect=new MySQLi($this->host,$this->uid,$this->password,$db);
//判斷連接是否出錯(cuò)
!mysqli_connect_error() or die("連接失??！");
//執(zhí)行sql語句
$result=$dbconnect->query($sql);
//判斷SQL語句類型
if($type==0)
{
//如果是查詢語句返回結(jié)果集的二維數(shù)組
return $result->fetch_all();
}
else
{
//如果是其他語句，返回true或false
return $result;
}
}
}
方法二：
1. 投票主頁面：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>投票</title>
<style>
.x
{
float:left;}
</style>
</head>
<body>
<form action="TouChuLi.php" method="post">
<?php
include ("../DBDA.class.php");
$db=new DBDA();
//從調(diào)研題目表中找出題目代號(hào)和名稱
$sql="select * from diaoyantimu limit 0,1";
$arr=$db->query($sql);
$tmmc=$arr[0][1];
$tmdh=$arr[0][0];
echo "<div><h2>{$tmmc}:</h2></div>";
//從調(diào)研選項(xiàng)表中輸出選項(xiàng)內(nèi)容：
$sqlxx="select * from diaoyanxuanxiang where timudaihao='{$tmdh}'";
$arrxx=$db->query($sqlxx);
echo "<div id='list'>";
foreach ($arrxx as $v)
{
echo "<div><input type='checkbox' value='{$v[0]}' name='xx[]'>{$v[1]}</div><br />";
}
?>
<input type="submit" value="提交">
<a href="ChaKan.php"><input type="button" value="查看結(jié)果" id="check" ></a>
</form>
</body>
</html>
2. 處理投票頁面：
<?php
$arr=$_POST["xx"];
include ("../DBDA.class.php");
$db=new DBDA();
foreach($arr as $v)
{
$sql = "update diaoyanxuanxiang set numbers = numbers+1 where ids = '{$v}'";
$db->Query($sql,1);//1代表$sql的類型
}
header ("location:TouPiao.php");
?>
3. 查看投票結(jié)果頁面：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>查看結(jié)果</title>
<style>
.x
{
float:left;}
</style>
</head>
<body>
<?php
include ("../DBDA.class.php");
$db=new DBDA();
//從調(diào)研題目表中找出題目代號(hào)和名稱
$sql="select * from diaoyantimu limit 0,1";
$arr=$db->query($sql);
$tmmc=$arr[0][1];
echo "<div><h2>{$tmmc}:</h2></div>";
//從調(diào)研選項(xiàng)表中輸出選項(xiàng)內(nèi)容：
$sqlxx="select * from diaoyanxuanxiang where timudaihao='{$arr[0][0]}'";
$arrxx=$db->query($sqlxx);
//計(jì)算總?cè)藬?shù)：
$sqlzs="select sum(numbers) from diaoyanxuanxiang where timudaihao='{$arr[0][0]}'";
$zrs=$db->query($sqlzs);
foreach ($arrxx as $v)
{
$name=$v[1];//調(diào)研項(xiàng)目名稱
$number=$v[2];//選擇該項(xiàng)的人數(shù)
//判斷總?cè)藬?shù)是否為0
if($zrs[0][0]==0)
{
$bfb = 0;
}
else
{
$bfb = ($number/$zrs[0][0])*100;//求百分比
}
$bfb=round($bfb,2); //取小數(shù)點(diǎn)后兩位
echo "<div>
<span class='x'>{$name} </span>
<div class='x' style='width:200px; height:10px; background-color:#808080'>
<div style='width:{$bfb}%; height:10px; background-color:#FF8040'> </div>
</div>
<span class='x'>{$number} </span>
<span class='x'>{$bfb}%</span><br />
</div><br />";
}
?>
<br />
<a href="TouPiao.php"><input type="button" value="返回"></a>
</body>
</html>
顯示結(jié)果：
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家學(xué)習(xí)php程序設(shè)計(jì)有所幫助。
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