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, $V) = each($curArray))
{
$poll_optionText = $descArray[$K];
$poll_optionCount = $V;
echo $poll_rowHeader;
if($poll_optionText != "")
{
echo $poll_dataHeader;
echo $poll_optionText;
echo $poll_dataFooter;
if($poll_sum)
$poll_percent = 100 * $poll_optionCount / $poll_sum;
else
$poll_percent = 0;
echo $poll_dataHeader;
if ($poll_percent > 0)
{
$poll_percentScale = (int)($poll_percent * $poll_resultBarScale);
}
printf(" %.2f %% (%d)", $poll_percent, $poll_optionCount);
echo $poll_dataFooter;
}
echo $poll_rowFooter;
}
echo "总共投票次数:<font color=red> $poll_sum</font>";
echo $poll_tableFooter;
echo "<br>";
echo "<input type="submit" name="Submit1" value="返回主页" onClick="javascript:location=''http://gophp.heha.net/index.html''">";
echo " <input type="submit" name="Submit2" value="重新投票" onClick="javascript:location=''http://gophp.heha.net/mypolls.php3''">";
if(isset($poll)){
// write counter file
$fp = fopen($coutfile, "wt");
reset($curArray);
while (list($Key, $Value) = each($curArray))
{
$tmp = sprintf( "%s %dn", $Key, $Value);
fwrite($fp, $tmp);
}
// close file
fclose($fp);
}
}
?>
</body>
</html>
注释:从上面我们可以看出该投票系统的基本过程:
1、打开文件取得数据到数组$curArray(文件不存在则初始化数组$curArray)
2、编历数组,处理数据得到所需值
3、计算百分比,控制统计bar图像宽度
4、将数据保存到"data.pol"中
这里有一点是需要注意:这里的data.pol文本文件需要有写权限。
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