C#TempData等价于php [英] c# TempData equivalent in php

问题描述

我知道我可以手动显式设置和取消设置会话，但是我认为这值得一问.在c#中，有一个名为TempData的字典，该字典存储数据直到第一个请求.换句话说，调用TempData时，它将自动取消设置.为了更好地理解，这里是一个示例:

I know I can explicitly set and unset a Session manually but I believe this is worth to ask. In c#, there is a dictionary called TempData which stores data until the first request. In other words, when TempData is called, it is automatically unset. For a better understanding here is an example:

Controller1.cs:

Controller1.cs:

TempData["data"] = "This is a stored data";

Model1.cs:

Model1.cs:

string dst1 = TempData["data"]; // This is a stored data
string dst2 = TempData["data"]; // This string will be empty, if an exception is not raised (I can't remember well if an exception is raised)

因此，基本上，这就像一个只能使用1次的会话.同样，我知道我可以在php中显式设置和取消设置，但是php是否具有像这样的功能?

So basically, this is just something like a session for 1 use only. Again, I know that I can set and unset explicitly in php, but still, does php has a function like this one?

推荐答案

使用会话来启用TempData.这是一个简单的PHP实现:

As the others have pointed out, uses sessions to enable TempData. Here is a simple PHP implementation:

class TempData {
    public static function get($offset) {
        $value = $_SESSION[$offset];
        unset($_SESSION[$offset]);
        return $value;
    }

    public static function set($offset, $value) {
        $_SESSION[$offset] = $value;
    }
}

测试:

TempData::set("hello", "world");
var_dump($_SESSION); // array(1) { ["hello"]=> string(5) "world" }

TempData::get("hello"); // => world
var_dump($_SESSION); // array(0) { } 

不幸的是，我们不能使用静态类来实现ArrayAccess.

Unfortunately, we can not implement ArrayAccess with a static class.

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