【 tulaoshi.com - PHP 】
建设一个简单交互的网站(五)
8. 投票系统
在许多时候，我们需要收集上网者和网友们的意见。例如：新版页面与旧版页面的比较；对某一事情的看法；对体育比赛结果的预测等等。这时候，你需要一个非常有效的网上调查系统。使用PHP就可以非常方便地实现你的这一构想。
8.1 投票系统（mypolls.php3）：
<?
$status=0;
if(isset($polled)&&($polled=="c-e")){
$status=1;
}
#echo "$status";
if(isset($poll)&&($status==0)){
setcookie("polled","c-e",time()+86400,"/");#time=24h
}
?
<html
<head
<title新版页面调查</title
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
<style type="text/css"
<!--
.tb { border="1" bordercolor="#009933" cellspacing="0" font-size: 9pt; color: #000000}
.head { font-family: "宋体"; font-size: 12pt; font-weight: bold; color: #009933; text-decoration: none}
.pt9 { font-size: 9pt}
a.p9:link { font-size: 9pt; color: #000000; text-decoration: none}
a.p9:visited { font-size: 9pt; color: #000000; text-decoration: none }
a.p9:hover { font-size: 9pt; color: #FF0000; text-decoration: underline}
a.p9:active { font-size: 9pt; color: #FF0000; text-decoration: underline }
--
</style
</head
<body bgcolor="#FFFFFF"
<div class="head"与旧版页面相比较您觉得新版页面：</div<br
<?
if(!isset($submit)){
?
<form action="myPolls.php3" method="get"
<input type="radio" name="poll_voteNr" value="1" checked
<span class="pt9"信息量更大</span <br
<input type="radio" name="poll_voteNr" value="2"
<span class="pt9"网页更精美</span <br
<input type="radio" name="poll_voteNr" value="3"
<span class="pt9"没什么改进</span <br
<input type="radio" name="poll_voteNr" value="4"
<span class="pt9"其它</span <br
<input type="submit" name="submit" value="OK"
<input type="hidden" name="poll" value="vote"
<A HREF="myPolls.php3?submit=OK" class="p9"查看调查结果</A
</form
<?
/*
如果想增加其它的选项可直接加上即可
*/
}else{
$descArray=array(1="信息量更大",
2="网页更精美",
3="没什么改进",
4="其它"
);
$poll_resultBarHeight = 9; // height in pixels of percentage bar in result table
$poll_resultBarScale = 1; // scale of result bar (in multiples of 100 pixels)
$poll_tableHeader="<table border=1 class="tb"";
$poll_rowHeader="<tr";
$poll_dataHeader="<td align=center";
$poll_dataFooter="</td";
$poll_rowFooter="</tr";
$poll_tableFooter="</table";
$coutfile="data.pol";
$poll_sum=0;
// read counter-file
if (file_exists( $coutfile))
{
$fp = fopen( $coutfile, "rt");
while ($Line = fgets($fp, 10))
{
// split lines into identifier/counter
if (ereg( "([^ ]*) *([0-9]*)", $Line, $tmp))
{
$curArray[(int)$tmp[1]] = (int)$tmp[2];
$poll_sum+=(int)$tmp[2];
}
}
// close file
fclose($fp);
}else{//
for ($i=1;$i<=count($descArray);$i++){
$curArray[$i]=0;
}
}
if(isset($poll)){
$curArray[$poll_voteNr]++;
$poll_sum++;
}
echo $poll_tableHeader;
// cycle through all options编历数组
reset($curArray);
while (list($K, $V) = each(
