Andrei Zmievski works on internal tools at Yahoo! Inc. specializing in i18n and infrastructure software, such as PHP and Apache. He is also a core PHP developer, leader of the PHP-GTK project, and a co-author of "PHP Developer's Cookbook" and Smarty templating system. His current focus is the native Unicode support in PHP. In his free time he studies languages and linguistics, goes sailing, and travels to other countries.