On his blog today, Wez Furlong has a bit about dtracing and how a provider for it has been created for the Solaris platform.

For those that don't know, dtracing, as Wez describes it, is:

...being something like strace that's been exposed to ultimate steroid mix during its conception. Why is it better than strace and similar tools? It's non-invasive, fast, scriptable and extensible.

He talks about Bryan Cantrill, one of the kernel developers of Solaris, and his little sit down with him to discuss the dtrace for PHP. It's built as a PECL extension, and can be installed as easily as any PEAR package. For the whole scoop, check out Wez's entry or head on over to Bryan's detailed entry on his blog...