将变量传递到Facebook iFrame app PHP [英] Pass variables into Facebook iFrame app PHP

问题描述

我认为这是可能的，但似乎我无法做到。

I thought this was possible, but it doesn't seem like I can do it.

我正在做的是传递变量 进入 facebook iframe应用程序。不管怎么样，但我一直在尝试几种不同的方法。如果有人有任何想法。

What I'm looking at doing is passing a variable into a facebook iframe application. It doesn't matter how, but I've been trying a couple different methods. If anyone has any idea.

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是（到下面），如果有其他人寻找此用途我找到了这些物品...

Yes (to below), I found the items if anyone else looks for this use… 

创建链接...

$link_params = array(
    'item1' => "blah",
    'item2'   => "blaaaaargh"
);
$encodedParams = urlencode(json_encode( $link_params )); 
//added to link as app_data

获取数据...

if (!empty($signed_request) && !empty($signed_request['app_data'])) {
  $app_data = json_decode($signed_request['app_data'], true);
} //use in your app from here as $app_data['item1']

推荐答案

app_data / signed_request /> signed_request 。文档说：

There is acutally something: the app_data in the signed_request. The documentation says:

包含查询字符串参数内容的JSON字符串也是
，称为app_data。通常在应用程序构建链接
以将某些数据传递给自身时指定。仅当您的应用是在页面标签中加载的iframe
时才可用。

A JSON string containing the content of a query string parameter also called app_data. Usually specified when the application built the link to pass some data to itself. Only available if your app is an iframe loaded in a Page tab.

这意味着，您只需拨打您的应用，将& app_data = ... 添加到网址。记得首先将参数编码为json。

This means, you simply call your app, add &app_data=... to the url. Remember to encode the parameters to json first.

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