dongqidi2799 2012-03-27 03:26
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饼干计数器PHP

I'm trying to do this counter for cookies. The cookies give the right values when I visit the site more than once but for first visit, it always tell me that the cookies(both) are not set. I'm new at PHP so I'm not sure if I missed something. The cookies are set before html tags.

setcookie("user", isset($_COOKIE["user"])? ++$_COOKIE["user"] : 1);
setcookie("date", date("d/m/y h:i:s"));
$count = $_COOKIE["user"];

---------------------------------
<body>

    <p><?php
        if( $count == 1)
            echo "Welcome! You're new here.";
        else
            echo "Hello, you have visited " .$_COOKIE["user"]. " times.";
            echo "<br/>";
            echo "Your last visit was ".$_COOKIE["date"];

    ?></p>

</body>
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2条回答 默认 最新

  • doudun5009 2012-03-27 03:53
    关注

    The setcookie function puts the cookie into the servers http header, which is sent along with the first request. The $_COOKIE array however does not get these values passed internally (from the setcookie function), instead it is generated from the request headers sent by the browser and this only happens after the browser got the cookie (from the first request) and sends it back on the second request.

    What you could do is this:

    $count = isset($_COOKIE["user"])?$_COOKIE["user"]:1;
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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