Consulting Technical Staff, Oracle CorporationAs a 15-year Oracle veteran, Christopher has worked for Oracle in both the US and Australia, working closely with the PHP community. He is the author of several technical articles on using PHP and Oracle, and he recently co-released The Underground PHP and Oracle Manual (download your free copy from http://otn.oracle.com/php). Christopher has presented at conferences including the International PHP Conference in both Frankfurt and Amsterdam, the Open Source Developer's Conference 2005, and the New York PHP Conference & Expo 2006. He also presents Oracle-PHP tutorials and PHPFests worldwide. Christopher's blog is at http://blogs.oracle.com/opal/.