According to this new post on the PHPClasses.org blog today, they're launching some premium services for the users of the site:

It is with great pleasure that I announce that the PHP Classes site finally launched the premium services for PHP developers that use the site. [...] The premium subscriptions are the alternative that I found to make this site provide a pleasant user experience and hopefully provide useful features that can help making the life of PHP developers better.

He goes into detail on what all is involved in the premium subscriptions including:

• No advertising
• Own site search
• Recorded searches
• Notable packages
• PHP Specialist forums

There's also several other services that are listed as "coming soon" to further enhance the site - customizable site design templates, new class wish lists, personalized bookmarks, etc. The cost for all of the premium services comes to $5 USD/month (with $15 USD due at a time because of restrictions on the payment gateway).

Another pair of interesting notes about the future of the site are mentions of revenue sharing for best contributors and the opportunity for free subscriptions.

You can get complete information about these premium services from its page on the PHPClasses.org website.