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I have a callback.php file that gets called by facebook and the update is stored in $updates. I want to display the contents of $updates on the webpage every time $updates changes. How can i do this? I have heard about Comet and Ajax..
what is the best way to go about doing this?
Easy: JS setinterval, poll server for updates every x seconds. Harder: HTML5 Websockets (not that hard when you get into it though).