php教程 $http_cookie_vars 实例投票资料限制 if ($http_cookie_vars["vote"]) { echo "<script>alert('您已经投过票了,请不要重复投票');history.back();</script>"; exit; } $vcount=$_post["vcount"]; $lld=$_post["jump"]; $tys=$_post["tys"]; if (!$vcount) { echo "<script>alert('您还没有选择任何投票项目');history.back();</script>"; exit; } $db=@mysql_connect("localhost","root","root") or die("数据库教程连接失败"); mysql_select_db("vote",$db); if ($vcount&&$lld) { if ($tys=="1") { $sql="update vote set vcount=vcount+1 where id=$vcount"; $result=mysql_query($sql,$db); setcookie("vote","vote",time()+3600); echo "<script>alert('投票成功!');location.href='vote.php?id=$lld';</script>"; } else { for ($i=0;$i<sizeof($vcount);$i++) { $sql1="update vote set vcount=vcount+1 where id=$vcount[$i]"; $result1=mysql_query($sql1,$db); } setcookie("vote","vote",time()+3600); echo "<script>alert('投票成功!');location.href='vote.php?id=$lld';</script>"; } }
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