PHP has been developed very well the past few years as community project, there is an open RFC process with a codified voting process in place. Sure there have been some drama within the community, but that has not affected either the language nor the implementation.
What makes PHP a great fit for a community driven project is that PHP is a pragmatic language in its core. If the general goal of a project is to design a perfect & consistent language then a community driven process is maybe not the best approach.
