首次访问时未设置Cookie [英] Cookie is not set on the first visit

问题描述

尽管我已经使用 setcookie 设置了cookie，但为什么在第一次时却跳到了 else 部分执行/首次访问？

Though I have set the cookie using setcookie, why does it skip to the else part during the first time of execution/ first visit?

<?php
    setcookie("dan", "Sony", time()+60);
    if(isset($_COOKIE['dan']))
    {
        echo "Set";
    }
    else
    {
        echo "Not yet!";
    }

?>

PS：我知道这是一个幼稚的问题，会被否决，但我找不到更好的论坛比StackOverflow。

P.S: I know it is a naive question and gets downvoted but I don't find a better forum than StackOverflow.

推荐答案

setcookie（）仅安排PHP脚本发出的HTML标头包含必要的 Set-Cookie：标头。浏览器通过存储cookie，然后在对站点的下一个请求中重新对其进行响应。

setcookie() merely arranges for the HTML headers emitted by the PHP script to contain the necessary "Set-Cookie:" header. The browser responds by storing the cookie and then regurgitating it on the next request to the site.

setcookie（）不会在当前执行的脚本内设置任何变量，这就是为什么您第一次看不到任何东西的原因。

setcookie() does not set any variables inside the currently-executing script, which is why you're not seeing anything the first time through.

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