Does Facade in Laravel implements Facade or Proxy Pattern?
The book, Architect's Guide to PHP Design Patterns notes,
The purpose of the Facade is to present a simpler interface to an entire sub-system composed of many objects.
At my understanding, design patterns are not a "priori" obligation but rather a commitment to implement a general reusable solution to a commonly occurring problem.
Laravel 4 takes advantage of the Facade Design Pattern, which allows it to provide an expressive syntax through a static API but still keep it testable under the hood. The Facade hides the complexity / implementation of the code. Indeed, Laravel's Facades implement a single object. We shouldn't neglect though that Laravel's App Facade (an IoC container) encapsulates the whole application .
A Proxy pattern intercepts a request and does extra work, for instance: filtering, ACL, transformation... The "consumer" Object is blissfully unaware of that extra work provided by the Proxy layer.