Roadsend announced their commercial PHP Implentation yesterday ($399 for 1 year license).

"The Roadsend Compiler offers a new, commercially supported implementation of the PHP language. It retains the powerful features that long-time PHP developers are used to, while offering significant advantages over the open source implementation to now make PHP a truly viable alternative to other compiled languages. With the Roadsend Compiler, developers can create native stand alone applications, libraries and web applications that require no interpreter. Because the Roadsend Compiler is compatible with open source PHP 4.3.7, existing code may be used in compiled products."