Cookie

Hejsa eksperter.

Jeg sidder med et afstemnings system. Det fungere ganske udemærket. Den logger brugerens ip, sådan at de ikke kan stemme igen. Problemet er blot, at da mange danskere køre med dynamisk ip, kan de efter at have genstartet computeren stemme igen.

Derfor vil jeg gerne have lagt en cookie funktion ind også. Cookien skal forsvinde efter 7 dage, problemet er blot at jeg ikke ved hvor jeg skal ligge denne funktion ind henne.


Koden på den side der viser afstemningen eller resultaterne er her:

<?php
function head() {
include('vote_config.php');
echo "<table width=\"100%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\">
<tr><td>
<table width=\"98\" border=\"0\" cellpadding=\"0\" cellspacing=\"\">
<tr><td bgcolor=\"$bgcolor\">";
}
function foot () {
echo "</td></tr></table></td></tr></table>";
}
function record($REMOTE_ADDR) {
include('vote_config.php');
$fp=fopen("$ip_file", "a+");
fputs ($fp,$REMOTE_ADDR."][".time()."\n");
fclose($fp);
}
function check($REMOTE_ADDR) {
include('vote_config.php');
global $valid;
$ip=$REMOTE_ADDR;
$data=file("$ip_file");
$now=time();
foreach ($data as $record) {
$subdata=explode("][",$record);
if ($now < ($subdata[1]+3600*$timeout)) {
if ($ip == $subdata[0]) {
$valid=0;
break;
}}}}
//##################### Save data ##############################
function save($answer){
global $answer;
include('vote_config.php');
$data=file($datafile);
$subdata=explode("][",$data[$answer]);
$subdata[2]+=1;
$data[$answer]=implode("][", $subdata);
$data[$answer]=$data[$answer]."\n";
$fp=fopen($datafile,"w+");
$a=0;
do{
fputs($fp,$data[$a]);
$a++;
}while($a<count($data));
fclose($fp);
}
//########################## Show Form ############################
function form($PHP_SELF){
include('vote_config.php');
head();
echo "<font size=\"$fontsize\" face=\"$font\" color=\"$textcolor\"><OBJECT><form method=\"post\" action=\"$PHP_SELF\">";
$data=file($datafile);
$question=$data[0];
$nb_options=count($data)-1;
echo "<b>$question</b><BR>";
for($nb=1;$nb <= $nb_options; $nb++){
$option=explode("][","$data[$nb]");
echo "<input type=\"radio\" name=\"answer\" value=\"$nb\"> ";
echo "$option[0]<br>";
}
echo "<input type=\"hidden\" name=\"save\" value=\"yes\">";
echo "<p align=\"center\"><input class=\"stem\" type=\"submit\" name=\"Submit\" value=\"Stem\"></form></object></font>";
echo "<font size=\"$fontsize\" face=\"$font\" color=\"$textcolor\"><a href=\""; echo $PHP_SELF; echo "?action=results\">Se stemmer</a></font>";
foot();
}
//################## Function to show results ########################
function results(){
include('vote_config.php');
head();
$data=file($datafile);
$nb_answers=count($data);
$votes=0;
$a=1;
do{
$subdata=explode("][",$data[$a]);
$votes += $subdata[2];
$a++;
}while($a < $nb_answers);
$a=1;
$b="answerv";
$v=100/$votes;
echo "<font size=\"$fontsize\" face=\"$font\" color=\"$textcolor\"><b>$data[0]</b><br><br>";
do{
$subdata=explode("][",$data[$a]);
$av = $subdata[2] * $v;
echo "<font size=\"$fontsize\" face=\"$font\" color=\"$textcolor\">$subdata[0] -"; printf(" %01.1f", $av); echo"%<br>";
$p2v = 100-$av;

$a++;
} while ($a < $nb_answers);
echo "<br> $votes stemmer";
foot();
}
//###################### Engine ####################################
check($REMOTE_ADDR);
if ($valid=="0"){ results();}
elseif ($action=="results") { results(); }
elseif ($save=="yes" && $valid!="0") { save($Answer); record($REMOTE_ADDR); results(); }
elseif ($action=="save" && !empty($valid)) { results(); }
elseif ($action!="save" && $valid!="0"){ form($PHP_SELF); }
?>