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copied!<p>I would just like to highlight a couple of points that I think have been overlooked in this particular Q&A:</p> <p>(1) In my opinion, I'd say that the "channel.html" code snippet that is recommended by Facebook needs to be a separate file – the snippet cannot just be put into an index file, as recommended by harry (by which I'm assuming he means an home page, or other generic content page of a website).</p> <p>If you look at the URL that the <code>SCRIPT</code> element's <code>src</code> attribute points to, it is the exact same script that is called asynchronously in the JS-SDK code:</p> <p><code>connect.facebook.net/en_US/all.js</code></p> <p>Therefore, placing another <code>SCRIPT</code> element pointing to this file into the index page (or any other page) is just making a completely wasteful and redundant HTTP request. The whole point of there being an individual file, i.e. "channel.html", is a way for Facebook to work around cross-domain scripting (XSS) issues. This concept is explained in much more detail and with better understanding than I have in the Stack Overflow article, <em>"<a href="https://stackoverflow.com/questions/7052734/why-do-we-need-to-create-a-channel-html-on-our-server-to-use-facebook-js-sdk">Why do we need to create a channel.html on our server to use Facebook JS SDK?</a>"</em></p> <p>(2.) It is worth noting that, if you do decide to use the PHP snippet within the "channel.html" file, you have two options which are not really made clear on the Facebook documentation:</p> <p>(a) You can save the file with a PHP extension, e.g. "channel.php", and update the variable in the JavaScript, like so: <code>channelUrl : '//WWW.YOUR_DOMAIN.COM/channel.php'</code></p> <p>(b) You can keep the file-name "channel.html" and configure the server to allow '.html' files to be processed as PHP.</p> <p>I'm also assuming that the file can be called anything, and stored anywhere on your web server, as long as it's URL is provided in the <code>channelURL</code> value.</p>

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