Oracle Magazine's May/June 2008 issue contains a "Developer Nation" article. In it, David Kelly interviews Levi Dixon from Community Connect about using PHP and Oracle.
This quote caught my eye:
"PHP and Oracle used to be considered a strange combination. Now having Oracle working on and contributing to the PHP OCI8 extension, I am assured that features that I want to leverage will be available to our application in future database releases because Oracle is actively working on the extension with foresight"
Another section mentions Oracle Database 11g DRCP connection pooling:
"There's a lot of thought that goes into making our site scale for large numbers of concurrent users, and Oracle's attention to this idea is resulting in new features that have immediate impact," says Dixon. One of those features is database resident connection pooling, introduced in Oracle Database 11g to address scalability requirements in environments requiring large numbers of connections with minimal database resource usage. "Connection pooling will be huge for us"
Read the article