如何实现Facebook应用程序“使用前点赞”？

发布于 2024-11-15 10:25:47 字数 52 浏览 4 评论 0原文

许多 Facebook 应用程序在使用前都会询问您“喜欢”它。如何实施？有专门的API吗？

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单调的奢华 2024-11-22 10:25:47

FBML 页面已被弃用，您现在只能创建 iframe 粉丝页面。当用户导航到您的页面时，Facebook 会发送一个您需要解码的signed_request 参数。本文有一个关于如何操作的演练。

function parsePageSignedRequest() {
    if (isset($_REQUEST['signed_request'])) {
      $encoded_sig = null;
      $payload = null;
      list($encoded_sig, $payload) = explode('.', $_REQUEST['signed_request'], 2);
      $sig = base64_decode(strtr($encoded_sig, '-_', '+/'));
      $data = json_decode(base64_decode(strtr($payload, '-_', '+/'), true));
      return $data;
    }
    return false;
}

if($signed_request = parsePageSignedRequest()) {
    if($signed_request->page->liked) {
      echo "This content is for Fans only!";
    } else {
      echo "Please click on the Like button to view this tab!";
    }
  }

FBML pages have been deprecated and you can now only create iframe fan pages. When the user navigates to your page, Facebook sends a signed_request parameter that you will need to decode. This article has a walkthrough on how to do it.

function parsePageSignedRequest() {
    if (isset($_REQUEST['signed_request'])) {
      $encoded_sig = null;
      $payload = null;
      list($encoded_sig, $payload) = explode('.', $_REQUEST['signed_request'], 2);
      $sig = base64_decode(strtr($encoded_sig, '-_', '+/'));
      $data = json_decode(base64_decode(strtr($payload, '-_', '+/'), true));
      return $data;
    }
    return false;
}

if($signed_request = parsePageSignedRequest()) {
    if($signed_request->page->liked) {
      echo "This content is for Fans only!";
    } else {
      echo "Please click on the Like button to view this tab!";
    }
  }

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