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    <p>Forget what the other poster said. Normal canvas apps do not accept the app_data parameter, only tab apps do. But you can use custom URLs beyond just the canvas URL. Let me show you how this works.</p> <p><strong>My App:</strong></p> <p>I have an app called PulseTrack. The main App URL is:</p> <p><a href="http://apps.facebook.com/pulsetrack/" rel="nofollow">http://apps.facebook.com/pulsetrack/</a></p> <p>Which points to this canvas URL:</p> <p><a href="http://mydomain.com/pulsetrack/" rel="nofollow">http://mydomain.com/pulsetrack/</a></p> <p>But I can also use this url:</p> <p><a href="http://apps.facebook.com/pulsetrack/watch/EP011583610051" rel="nofollow">http://apps.facebook.com/pulsetrack/watch/EP011583610051</a></p> <p>Which points to:</p> <p><a href="http://mydomain.com/pulsetrack/watch/EP011583610051" rel="nofollow">http://mydomain.com/pulsetrack/watch/EP011583610051</a></p> <p><strong>Your app</strong></p> <p>Using straight up PHP if you can setup your canvas URL like this:</p> <p><a href="http://yourdomain.com/index.php" rel="nofollow">http://yourdomain.com/index.php</a>?</p> <p>Then you can pass directory parameters to the end of your URL like so:</p> <p><a href="http://apps.facebook.com/your-app/your/awesome/params" rel="nofollow">http://apps.facebook.com/your-app/your/awesome/params</a></p> <p>Which will come to you like this:</p> <p><a href="http://yourdomain.com/index.php?/your/awesome/params" rel="nofollow">http://yourdomain.com/index.php?/your/awesome/params</a></p> <p>Something like this should be able to parse those "parameters" from the query string</p> <pre><code>$query = $_SERVER['QUERY_STRING']; $params = explode("/", $query); </code></pre> <p>Best of luck, this took me a long to figure out.</p>
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