I am building an AJAX web application in ExtJS im not sure what I should use for the back-end of my application.

Can someone help with a comparison of PHP vs. Ruby vs. Jaxer?

You can find some info in the following links:

http://stackoverflow.com/questions/98915/is-anyone-familiar-with-jaxer-im-looking-for-pros-and-cons

http://www.cmswire.com/cms/industry-news/php-vs-java-vs-ruby-000887.php

You can no doubt find more doing a search. Unless you are going to do some really major development you probably want to go with what you already know. If you are basically a js/ajax person, then there would be some simplicity in using jaxer. If you are already comfortable with PHP or Ruby then use that. If you have a specific concern about performance, dev time, maintainability etc. then you will have to factor that into your decision.

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