After waiting for a really long time (half a year) I finally have an approved php.net + PECL account granted with lead-rights on V8Js :-)
… therefore I finally published V8Js version 0.2.0, succeeding 0.1.5 which was published 1.5 years ago.
Changes include
adapt to latest v8 API (v8 versions from 3.24.6 up to latest 4.3 branch supported now)
v8 debugging support
apply time & memory limits to V8Function calls
support mapping of PHP objects implementing ArrayAccess to native arrays
new API to set limits: setTimeLimit & setMemoryLimit methods on V8Js object
typesafe JavaScript function wrappers
improved back-and-forth object passing (rewrapping, correcty isolate unlocking)
fix property and method visibility issues
fix memory leaks
Download the release from PECL repository.