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2011-09-09T00:10:35.430
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<h3>Problem</h3> <p>The <code>access_token</code> in your pasted URL is not part of the query string, but instead contained in the URL fragment (after the #). URL fragments are not sent to the web server, and are readable only by client-side code like Javascript. Therefore the PHP SDK only sees <a href="http://karmakorn.com/karmakorn/alpha20/kk-fb-auth.php" rel="nofollow">http://karmakorn.com/karmakorn/alpha20/kk-fb-auth.php</a>, which is why <code>$_REQUEST</code> does not contain an <code>access_token</code> key.</p> <h3>Questions / Notes</h3> <ol> <li>What are you using for your redirect_uri? I think you want to be using something like <a href="http://apps.facebook.com/your_canvas_url/" rel="nofollow">http://apps.facebook.com/your_canvas_url/</a></li> <li><p>You shouldn't need to call <code>parse_signed_request</code> yourself or copy any code from the signed request page. The PHP SDK will do that for you. Just call:</p> <pre><code>$facebook = new Facebook(array( 'appId' => '…', 'secret' => '…', )); $access_token = $facebook->getAccessToken(); </code></pre></li> </ol> <h3>Possible solutions</h3> <ol> <li>Also use the <a href="http://developers.facebook.com/docs/reference/javascript/" rel="nofollow">Facebook Javascript SDK</a>. You can start by adding its <code><script></code> tag in your destination page (kk-fb-auth.php) (see <a href="http://developers.facebook.com/docs/reference/javascript/" rel="nofollow">the docs</a> for full details; don't forget to set <code>oauth: true</code>). The JS SDK should set a cookie (named fbsr_126736467765) which the PHP SDK will be able to read via <code>$_REQUEST</code> or <code>$_COOKIE</code> on subsequent page loads.</li> </ol>
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1. POPHP SDK: How do I capture the access token after user auths app?
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1. COPC, thanks for the helpful distinction between the query string and url fragments (which we'll have to learn more about). I've added some more detail to our question. We'd really like to solve this entirely with PHP, since our app is data-intensive and the Facebook JavaScript SDK shows a bit too much latency for our purposes -- we need to populate our app pages with a lot of data from our database after we get the Facebook ID for the current user.
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