Website template/framework for business directory lookup

I want to get a PHP based website framework similar for a business directory similar to

What it must do:
-ajax forms
-geographical lookup of businesses based on radius of zip code
-admin panel to maintain users, add business, reports, define geographical regions, ...
-integrate to credit card, Paypal, ...
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Ray PaseurCommented:
Yellow Pages is a 100% custom app that uses a content-delivery network.  Not sure how much budget you have for your planned application, but it would need to be substantial.  

The AJAX forms they use are standard jQuery stuff (almost any content management system or framework is compatible).

Geographic lookup of nearby entities is pretty simple.  You can use plane geometry up to about 100 miles.  Beyond that, you want to use the Haversine formula.

Integration with PayPal and other payment processors is work, but not rocket science -- it's well documented in their developer manuals, and you can find professional programmers with a Google search.  There are folks who specialize and go to all the conferences, etc.

The Admin panel can be whatever you want.

If this were my assignment I would first look at Drupal and Joomla (again, you can find expert programmers who specialize) and possibly at Wordpress.  These might be able to form a useful foundation.  Another alternative is the Zend framework.  The framework would probably require more custom work than the CMS platforms, but might be more malleable as your needs evolve.

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