存储和检索在PHP中的cookie数组 [英] Storing and retrieving an array in a PHP cookie

问题描述

我在找一些虚拟索引卡存储一些数据。每个卡具有正面和背面，并且用户能够存储多张卡。每一方都会有它的数据。

I'm looking to store some data from some 'virtual' index cards. Each card has a front and a back, and the user can store multiple cards. Each side will have data on it.

I ----------------- I I CARD 1 FRONT I I------------------I
I --------------- I I CARD 1 BACK I I-----------------I
I ----------------- I I CARD 2 FRONT I I------------------I
I --------------- I I CARD 2 BACK I I-----------------I

确定我的图表被弄乱了一下。但是，你得到的消息。 ：）

OK, my diagrams got messed up a bit. But you get the message. :)

从上面的图中想象它。我想每个卡的数据（正面和背面）存储在cookie中，作为数组（也许），然后就可以拉每个值回并插入适用（在不同的页面）。与此同时，铭记，因为他们喜欢的用户可以尽可能多的卡。我不能使用POST或GET功能。该阵列位是有争议的，如果你能想到的在cookie中存储这些数据更简单的方法，让我知道。请注意：不建议存储在数据库中，因为它不会便于项目。 ：）

Imagine it from the diagrams above. I'd like to store each card's data (front and back) in a cookie, as an array (maybe), and then be able to pull each value back and insert it where applicable (on a different page). At the same time, bear in mind that the user can make as many cards as they like. I can't use POST or GET functions. The array bit is debatable, if you can think of an easier way of storing this data in a cookie, let me know. Please note: don't suggest storing in a database, as it won't be convenient for the project. :)

我14岁，和PHP是不是我的最强的语言，所以请保持简单。如果你考虑下投票，关闭的问题，等等。我只用那么作为最后的手段，请记住这一点，我已经研究这个话题时，无法找到答案。我也有一个查找类似矿的问题，找不到任何太相似了。 ：）

I'm 14 years old, and PHP isn't my strongest language, so please keep it simple. Please bear this in mind if you consider down voting, closing the question, etc. I only ever use SO as a last resort, and I have researched this topic for hours and could not find an answer. I've also had a look for a question similar to mine, and couldn't find any too similar. :)

推荐答案

使用 json_en code / json_de code 来的get / set阵列中的cookies。

Use json_encode / json_decode to get / set arrays in cookies.

测试阵列

$cardArray=array(
    'CARD 1'=>array('FRONT I', 'BACK I'),
    'CARD 2'=>array('FRONT 2', 'BACK 2')
);

转换和写入cookie的

convert and write the cookie

$json = json_encode($cardArray);
setcookie('cards', $json);

保存的字符串看起来像

the saved string looks like this

{"CARD 1":["FRONT I","BACK I"],"CARD 2":["FRONT 2","BACK 2"]}

得到的cookie回来

get the cookie back

$cookie = $_COOKIE['cards'];
$cookie = stripslashes($cookie);
$savedCardArray = json_decode($cookie, true);

显示恢复阵列

echo '<pre>';
print_r($savedCardArray);
echo '</pre>';

输出

Array
(
    [CARD 1] => Array
        (
            [0] => FRONT I
            [1] => BACK I
        )

    [CARD 2] => Array
        (
            [0] => FRONT 2
            [1] => BACK 2
        )

)

---

修改结果
如果你想知道关于的stripslashes ，这是因为实际上保存在字符串

---

Edit
If you wonder about stripslashes, it is because the string saved actually is

{\"CARD 1\":[\"FRONT I\",\"BACK I\"],\"CARD 2\":[\"FRONT 2\",\"BACK 2\"]}

的setcookie quoutes逃脱他们之前添加 \\ 。如果你无法摆脱那些， json_de code 将失败。

setcookie adds \ before quoutes to escape them. If you not get rid of those, json_decode will fail.

修改II

要添加新卡到cookie

To add a new card to the cookie

1. 阵列负载如上


2. $ savedCardArray ['卡XX'] =阵列（'XX FRONT，BACK XX'）;


3. 将数组保存同上，但现在当然 $ savedCardArray ，而不是 $ cardArray 。

1. load the array as above
2. $savedCardArray['CARD XX']=array('FRONT XX', 'BACK XX');
3. save the array as above, but now of course $savedCardArray and not $cardArray.

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