The PHP scalability myth

Yesterday I took home The PHP Scalability Myth to read at my leisure. It didn’t occur to me that it would tie in with my other post from yesterday, What makes a good middle tier?. 
 Jack Herrington sets out to debunk the myths surrounding this scripting platform. It’s his discussion
 of the logical and physical layout of a three-tier architecture that gives
 the two articles their common ground.

Near the end, there’s an interesting mention of JSR 223, which aims 
 to let scripting languages serve as the presentation layer, or front end, for
 server-side Java applications. I’ll just add that the JSR is part of
 the Java Community Process, through which the Java platform is extended.