1. 投票主页面:
<!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>投票</title> </head> <body> <form action="TouChuLi.php" method="post"> <?phpinclude ("DBDA.class.php");$db=new DBDA();//从调研题目表中找出题目代号和名称$sql="select * from diaoyantimu limit 0,1";$arr=$db->query($sql);$tmmc=$arr[0][1];$tmdh=$arr[0][0];echo "<p><h2>{$tmmc}:</h2></p>";//从调研选项表中输出选项内容:$sqlxx="select * from diaoyanxuanxiang where timudaihao='{$tmdh}'";$arrxx=$db->query($sqlxx);echo "<p id='list'>";foreach ($arrxx as $v) { echo "<p><input type='checkbox' value='{$v[0]}' name='xx[]'>{$v[1]}</p><br />"; } ?> <input type="submit" value="提交"> <input type="button" value="查看结果" id="check" onclick="Showjieguo()"> </form> </p> <p id="jieguo" style="display:none"> <?php//计算总人数:$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 "<p> <span class='x'>{$name} </span> <p class='x' style='width:200px; height:10px; background-color:#808080'> <p style='width:{$bfb}%; height:10px; background-color:#FF8040'> </p> </p> <span class='x'>{$number} </span> <span class='x'>{$bfb}% </span> </p> <br /> "; }?> <input type="button" value="返回" id="fanhui" onclick="Showfanhui()"> </p> <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.处理投票页面:
<?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的类型}header ("location:TouPiao.php");?>
3. 建立访问数据库的类,封装用于引用:
<?php//执行一个sql语句,返回相应的结果class DBDA { public $host="localhost";//数据库服务器地址 public $uid="root";//数据库用户名 public $password="";//数据库密码 //执行SQL语句的方法 //参数里面:$sql代表要执行的sql语句;$type是sql语句的类型,0代表查询,1代表其他(增删改);$db代表要操作的数据库 function Query($sql,$type=0,$db="0710_info") { //造连接对象 $dbconnect=new MySQLi($this->host,$this->uid,$this->password,$db); //判断连接是否出错 !mysqli_connect_error() or die("连接失败!"); //执行sql语句 $result=$dbconnect->query($sql); //判断SQL语句类型 if($type==0) { //如果是查询语句返回结果集的二维数组 return $result->fetch_all(); } else { //如果是其他语句,返回true或false return $result; } } }
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