That's one nice thing about Java. You can bundle the entire app in one .jar or .war file (a .war is essentially the same as a .jar but it's designed to run within a Servlet container like Tomcat).
PHP also became popular in the PHP 4.x era because it had a large standard library (you could easily create a PHP site with no third-party libraries), and deployment was simply copying the files to the server. No build step needed. Classic ASP was popular before it, and also had no build step. but it had a very small standard library and relied heavily on COM components which had to be manually installed on the server.
PHP is mostly the same today, but these days it's JIT compiled so it's faster than the PHP of the past, which was interpreted.