使用 PHP 增加 Cookie(初学者问题)

发布于 2024-08-30 02:24:38 字数 820 浏览 4 评论 0原文

我以前用过session,但从来没有用过cookies。我想使用 cookie 有两个原因:
1)这是需要学习的新东西
2)我想让 cookie 在一个小时左右过期(我知道在代码示例中它会在 40 秒后过期)

我正在尝试编写一个基本的 if 语句,

      if($counter=="1") { //do this second 
} 
        elseif ($counter >="2") { //do this every time after the first and second
} 
        else {// this is the first action as counter is zero
}

这是我用来设置 cookie 的代码:

 // if cookie doesnt exsist, set the default
    if(!isset($_COOKIE["counter_cookie"])) {
        $counter = setcookie("counter_cookie", 0 ,time()+40);

    }

    // increment it
     $counter++;



    // save it
     setcookie("counter_cookie", $counter,time()+40);
     $counter = $_COOKIE["counter_cookie"];

问题是计数器将从 0 设置为 1,但不会从 1 设置为 2,依此类推。任何帮助都会很棒我知道这是一个非常简单的愚蠢问题:|

谢谢!

I have used sessions before but never cookies. I would like to use cookies for two reasons:
1) it's something new to learn
2) I would like to have the cookie expire in an hour or so (i know in the code example it expires in 40 sec)

I am trying to write a basic if statement that

      if($counter=="1") { //do this second 
} 
        elseif ($counter >="2") { //do this every time after the first and second
} 
        else {// this is the first action as counter is zero
}

Here is the code I'm using to set the cookie:

 // if cookie doesnt exsist, set the default
    if(!isset($_COOKIE["counter_cookie"])) {
        $counter = setcookie("counter_cookie", 0 ,time()+40);

    }

    // increment it
     $counter++;



    // save it
     setcookie("counter_cookie", $counter,time()+40);
     $counter = $_COOKIE["counter_cookie"];

The problem is that the counter will be set from 0 to 1 but won't be set from 1 to 2 and so on. Any help would be great I know this is a really simple stupid question :|

Thanks!

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ˇ宁静的妩媚 2024-09-06 02:24:38

该问题很可能与这一行有关:

$counter = setcookie("counter_cookie", 0 ,time()+40);

您似乎期望 setcookie 返回一个值,但这不会发生。相反,setcookie 只会在成功时返回布尔值 true,在失败时返回 false。

http://php.net/manual/en/function.setcookie.php

你可以尝试这样重写以达到想要的效果:

if(isset($_COOKIE["counter_cookie"]))
{
  $counter = $_COOKIE["counter_cookie"];
}
else
{
  $counter = 0;
}
$counter++
setcookie("counter_cookie", $counter ,time()+40);

The problem is most likely related to this line:

$counter = setcookie("counter_cookie", 0 ,time()+40);

It appears you are expecting setcookie to return a value, but that isn't going to happen. Instead, setcookie will simply return a boolean true on success and false on failure.

http://php.net/manual/en/function.setcookie.php

You could try rewriting it like this to achieve the desired effect:

if(isset($_COOKIE["counter_cookie"]))
{
  $counter = $_COOKIE["counter_cookie"];
}
else
{
  $counter = 0;
}
$counter++
setcookie("counter_cookie", $counter ,time()+40);
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