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    <p>After a lot of tinkering myself, I've found a way! </p> <p>In your php script, you should set timeout limit to <code>0</code>, and have a infinite loop, like that:</p> <pre><code>&lt;?php set_time_limit(0); while (true) { print "blah\n"; sleep(120); } </code></pre> <p>This code will print out "blah" every 2 minutes.</p> <p>To deploy this to AppFog, you <em>must</em> use the <code>af</code> console command. The big thing here is to say <strong>no</strong> when it asks if that's a PHP app.</p> <h2>The steps</h2> <ol> <li><code>af push</code> on the directory</li> <li>say <strong>no</strong> if it guesses the language of your app</li> <li>Select <strong>Standalone</strong> as the app type.</li> <li>Now you select PHP</li> <li>Enter <code>php index.php</code> or whatever name you gave to your application main file.</li> </ol> <p>It's all shown below:</p> <pre><code>D:\Users\Leonel\dev\app&gt;af push Would you like to deploy from the current directory? [Yn]: Application Name: APP Detected a PHP Application, is this correct? [Yn]: n [...] 6: Standalone [...] Select Application Type: 6 Selected Standalone Application [...] 5: php [...] Select Runtime: 5 Selected php Start Command: php index.php 1: AWS US East - Virginia [...] Select Infrastructure: 1 Application Deployed URL [None]: Memory reservation (128M, 256M, 512M, 1G, 2G) [128M]: How many instances? [1]: Bind existing services to 'APP'? [yN]: Create services to bind to 'APP'? [yN]: Would you like to save this configuration? [yN]: Creating Application: OK Uploading Application: Checking for available resources: OK Packing application: OK Uploading (0K): OK Push Status: OK Staging Application 'APP': OK Starting Application 'APP': OK D:\Users\Leonel\dev\APP&gt;af logs APP ====&gt; /logs/stdout.log &lt;==== blah blah </code></pre> <h2>Some Notes</h2> <ul> <li>You need to create a <em>separate</em> app to perform the background tasks, though this app can be binded to the same services (e.g databases) of the other apps or this app can <code>curl</code> to your other app, for example. Just make sure it's on the same availability zone.</li> <li><code>af logs APP</code> will give you the output of the worker, so you can debug and check if everything is ok.</li> </ul> <p>That's it, hope it helps.</p>
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    1. CO+1 great answer. You might want to wrap it in a try catch and log the errors too.
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    2. COcan we 'exec' scripts on AppFog in order to simulate parallel processes?
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