dqcqcqwq38860 2012-11-10 23:37
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如何在不刷新页面的情况下在PHP中获取cookie?

I currently have this code and two problems:

I get the users timezone with Javascript and post it to the timezone.php via ajax, which sets a cookie with the users time. If the cookie is not set, say on first visit, the page would have to be refreshed in order to show the cookie value. I'm doing this with javascript at the moment, but there has to be another way. Also, since the page refreshes if there is no cookie, users with cookies disabled would get a refresh loop.

Any suggestions on how to solve these problems?

Thank you, Markus


index.php:

<!DOCTYPE html>
<html>
<head>
<style>
    .night {
        background: #000;
        color: #fff;
    }
</style>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<?php

        if(isset($_COOKIE["time"])) {
            $time = $_COOKIE["time"];
            if($time < 5.5 || $time > 19) {
                $night = true;
            }
        } else {
            echo("
            <script>
              var timezone = new Date().getTimezoneOffset()/60;

              $(document).ready(function() {
                $.post('timezone.php',{timezone: timezone}, function(data){location.reload(true)});
              });
            </script>
            ");
        }
?>

</head>
<body class="<?php echo $night ? "night" : "day"; ?>">
<?php if($night) {
    echo "It's nighttime! ($time)";
} else {
    echo "It's daytime! ($time)";
} ?>
</body>
</html>

timezone.php:

<?php

$timezone = $_POST["timezone"];

if(isset($timezone)) {
    date_default_timezone_set('Etc/GMT'.($timezone <= 0 ? '' : '+').$timezone);
    $time = date("G") + (date("i")/60);
    setcookie("time", $time);
}

?>
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4条回答 默认 最新

  • dongzhansong5785 2012-11-10 23:43
    关注

    You can use JQuery Plugin https://github.com/carhartl/jquery-cookie and check if the cookie is set in your $.post method like that

     $.post('timezone.php',{timezone: timezone}, function(data){
         if ($.cookie("time") != null) 
             location.reload(true);
    });
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
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